diff --git a/config/checkstyle/checkstyle.xml b/config/checkstyle/checkstyle.xml
deleted file mode 100644
index c5f6465..0000000
--- a/config/checkstyle/checkstyle.xml
+++ /dev/null
@@ -1,277 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE module PUBLIC
-        "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
-        "https://checkstyle.org/dtds/configuration_1_3.dtd">
-
-<!--
-    Checkstyle configuration that checks the Google coding conventions from Google Java Style
-    that can be found at https://google.github.io/styleguide/javaguide.html.
-
-    Checkstyle is very configurable. Be sure to read the documentation at
-    http://checkstyle.sf.net (or in your downloaded distribution).
-
-    To completely disable a check, just comment it out or delete it from the file.
-
-    Authors: Max Vetrenko, Ruslan Diachenko, Roman Ivanov.
- -->
-
-<module name="Checker">
-    <property name="charset" value="UTF-8"/>
-
-    <property name="severity" value="warning"/>
-
-    <property name="fileExtensions" value="java, properties, xml"/>
-    <!-- Excludes all 'module-info.java' files              -->
-    <!-- See https://checkstyle.org/config_filefilters.html -->
-    <module name="BeforeExecutionExclusionFileFilter">
-        <property name="fileNamePattern" value="module\-info\.java$"/>
-    </module>
-    <!-- Checks for whitespace                               -->
-    <!-- See http://checkstyle.sf.net/config_whitespace.html -->
-    <module name="FileTabCharacter">
-        <property name="eachLine" value="true"/>
-    </module>
-
-    <module name="LineLength">
-        <property name="max" value="120"/>
-        <property name="ignorePattern" value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>
-    </module>
-
-    <module name="SuppressWarningsFilter"/>
-
-    <module name="SuppressWithPlainTextCommentFilter">
-        <property name="offCommentFormat" value="CHECKSTYLE_OFF"/>
-        <property name="onCommentFormat" value="CHECKSTYLE_ON"/>
-        <property name="checkFormat"
-                  value="^((?!(FileTabCharacterCheck)).)*$"/>
-    </module>
-
-    <module name="TreeWalker">
-        <module name="SuppressWarningsHolder"/>
-        <module name="SuppressionCommentFilter">
-            <property name="offCommentFormat" value="CHECKSTYLE_OFF: ALMOST_ALL"/>
-            <property name="onCommentFormat" value="CHECKSTYLE_ON: ALMOST_ALL"/>
-            <property name="checkFormat" value="^((?!(EqualsHashCode)).)*$"/>
-        </module>
-        <module name="OuterTypeFilename"/>
-        <module name="IllegalTokenText">
-            <property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>
-            <property name="format"
-                      value="\\u00(09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)"/>
-            <property name="message"
-                      value="Consider using special escape sequence instead of octal value or Unicode escaped value."/>
-        </module>
-        <module name="AvoidEscapedUnicodeCharacters">
-            <property name="allowEscapesForControlCharacters" value="true"/>
-            <property name="allowByTailComment" value="true"/>
-            <property name="allowNonPrintableEscapes" value="true"/>
-        </module>
-        <module name="AvoidStarImport"/>
-        <module name="OneTopLevelClass"/>
-        <module name="NoLineWrap"/>
-        <module name="EmptyBlock">
-            <property name="option" value="TEXT"/>
-            <property name="tokens"
-                      value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH"/>
-        </module>
-        <module name="NeedBraces"/>
-        <module name="LeftCurly"/>
-        <module name="RightCurly">
-            <property name="id" value="RightCurlySame"/>
-            <property name="tokens"
-                      value="LITERAL_TRY, LITERAL_CATCH, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE,
-                    LITERAL_DO"/>
-        </module>
-        <module name="RightCurly">
-            <property name="id" value="RightCurlyAlone"/>
-            <property name="option" value="alone"/>
-            <property name="tokens"
-                      value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, STATIC_INIT,
-                    INSTANCE_INIT"/>
-        </module>
-        <module name="WhitespaceAround">
-            <property name="allowEmptyConstructors" value="true"/>
-            <property name="allowEmptyLambdas" value="true"/>
-            <property name="allowEmptyMethods" value="true"/>
-            <property name="allowEmptyTypes" value="true"/>
-            <property name="allowEmptyLoops" value="true"/>
-            <message key="ws.notFollowed"
-                     value="WhitespaceAround: ''{0}'' is not followed by whitespace. Empty blocks may only be represented as '{}' when not part of a multi-block statement (4.1.3)"/>
-            <message key="ws.notPreceded"
-                     value="WhitespaceAround: ''{0}'' is not preceded with whitespace."/>
-        </module>
-        <module name="OneStatementPerLine"/>
-        <module name="MultipleVariableDeclarations"/>
-        <module name="ArrayTypeStyle"/>
-        <module name="MissingSwitchDefault"/>
-        <module name="FallThrough"/>
-        <module name="UpperEll"/>
-        <module name="ModifierOrder"/>
-        <module name="EmptyLineSeparator">
-            <property name="allowNoEmptyLineBetweenFields" value="true"/>
-        </module>
-        <module name="SeparatorWrap">
-            <property name="id" value="SeparatorWrapDot"/>
-            <property name="tokens" value="DOT"/>
-            <property name="option" value="nl"/>
-        </module>
-        <module name="SeparatorWrap">
-            <property name="id" value="SeparatorWrapComma"/>
-            <property name="tokens" value="COMMA"/>
-            <property name="option" value="EOL"/>
-        </module>
-        <module name="SeparatorWrap">
-            <!-- ELLIPSIS is EOL until https://github.com/google/styleguide/issues/258 -->
-            <property name="id" value="SeparatorWrapEllipsis"/>
-            <property name="tokens" value="ELLIPSIS"/>
-            <property name="option" value="EOL"/>
-        </module>
-        <module name="SeparatorWrap">
-            <!-- ARRAY_DECLARATOR is EOL until https://github.com/google/styleguide/issues/259 -->
-            <property name="id" value="SeparatorWrapArrayDeclarator"/>
-            <property name="tokens" value="ARRAY_DECLARATOR"/>
-            <property name="option" value="EOL"/>
-        </module>
-        <module name="SeparatorWrap">
-            <property name="id" value="SeparatorWrapMethodRef"/>
-            <property name="tokens" value="METHOD_REF"/>
-            <property name="option" value="nl"/>
-        </module>
-        <module name="PackageName">
-            <property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$"/>
-            <message key="name.invalidPattern"
-                     value="Package name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="TypeName">
-            <message key="name.invalidPattern"
-                     value="Type name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="MemberName">
-            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>
-            <message key="name.invalidPattern"
-                     value="Member name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="ParameterName">
-            <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
-            <message key="name.invalidPattern"
-                     value="Parameter name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="LambdaParameterName">
-            <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
-            <message key="name.invalidPattern"
-                     value="Lambda parameter name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="CatchParameterName">
-            <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
-            <message key="name.invalidPattern"
-                     value="Catch parameter name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="LocalVariableName">
-            <property name="tokens" value="VARIABLE_DEF"/>
-            <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
-            <message key="name.invalidPattern"
-                     value="Local variable name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="ClassTypeParameterName">
-            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
-            <message key="name.invalidPattern"
-                     value="Class type name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="MethodTypeParameterName">
-            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
-            <message key="name.invalidPattern"
-                     value="Method type name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="InterfaceTypeParameterName">
-            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
-            <message key="name.invalidPattern"
-                     value="Interface type name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="NoFinalizer"/>
-        <module name="GenericWhitespace">
-            <message key="ws.followed"
-                     value="GenericWhitespace ''{0}'' is followed by whitespace."/>
-            <message key="ws.preceded"
-                     value="GenericWhitespace ''{0}'' is preceded with whitespace."/>
-            <message key="ws.illegalFollow"
-                     value="GenericWhitespace ''{0}'' should followed by whitespace."/>
-            <message key="ws.notPreceded"
-                     value="GenericWhitespace ''{0}'' is not preceded with whitespace."/>
-        </module>
-        <module name="Indentation">
-            <property name="basicOffset" value="4"/>
-            <property name="braceAdjustment" value="0"/>
-            <property name="caseIndent" value="4"/>
-            <property name="throwsIndent" value="4"/>
-            <property name="lineWrappingIndentation" value="4"/>
-            <property name="arrayInitIndent" value="4"/>
-        </module>
-        <module name="AbbreviationAsWordInName">
-            <property name="ignoreFinal" value="false"/>
-            <property name="allowedAbbreviationLength" value="1"/>
-        </module>
-        <module name="OverloadMethodsDeclarationOrder"/>
-        <module name="VariableDeclarationUsageDistance"/>
-        <module name="CustomImportOrder">
-            <property name="customImportOrderRules"
-                      value="THIRD_PARTY_PACKAGE###SPECIAL_IMPORTS###STANDARD_JAVA_PACKAGE###STATIC"/>
-            <property name="specialImportsRegExp" value="^javax\."/>
-            <property name="standardPackageRegExp" value="^java\."/>
-            <property name="sortImportsInGroupAlphabetically" value="true"/>
-            <property name="separateLineBetweenGroups" value="false"/>
-        </module>
-        <module name="MethodParamPad"/>
-        <module name="NoWhitespaceBefore">
-            <property name="tokens"
-                      value="COMMA, SEMI, POST_INC, POST_DEC, DOT, ELLIPSIS, METHOD_REF"/>
-            <property name="allowLineBreaks" value="true"/>
-        </module>
-        <module name="ParenPad"/>
-        <module name="OperatorWrap">
-            <property name="option" value="NL"/>
-            <property name="tokens"
-                      value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR,
-                    LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR, METHOD_REF "/>
-        </module>
-        <module name="AnnotationLocation">
-            <property name="id" value="AnnotationLocationMostCases"/>
-            <property name="tokens"
-                      value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF"/>
-        </module>
-        <module name="AnnotationLocation">
-            <property name="id" value="AnnotationLocationVariables"/>
-            <property name="tokens" value="VARIABLE_DEF"/>
-            <property name="allowSamelineMultipleAnnotations" value="true"/>
-        </module>
-        <module name="NonEmptyAtclauseDescription"/>
-        <module name="JavadocTagContinuationIndentation"/>
-        <module name="SummaryJavadoc">
-            <property name="forbiddenSummaryFragments"
-                      value="^@return the *|^This method returns |^A [{]@code [a-zA-Z0-9]+[}]( is a )"/>
-        </module>
-        <module name="JavadocParagraph"/>
-        <module name="AtclauseOrder">
-            <property name="tagOrder" value="@param, @return, @throws, @deprecated"/>
-            <property name="target"
-                      value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
-        </module>
-        <module name="JavadocMethod">
-            <property name="scope" value="public"/>
-            <property name="allowMissingParamTags" value="true"/>
-            <property name="allowMissingReturnTag" value="true"/>
-            <property name="allowedAnnotations" value="Override, Test"/>
-        </module>
-        <module name="MethodName">
-            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9_]*$"/>
-            <message key="name.invalidPattern"
-                     value="Method name ''{0}'' must match pattern ''{1}''."/>
-        </module>
-        <module name="SingleLineJavadoc">
-            <property name="ignoreInlineTags" value="false"/>
-        </module>
-        <module name="EmptyCatchBlock">
-            <property name="exceptionVariableName" value="expected"/>
-        </module>
-        <!-- <module name="CommentsIndentation"/> -->
-    </module>
-</module>
diff --git a/config/pmd.xml b/config/pmd.xml
deleted file mode 100644
index 22f6a03..0000000
--- a/config/pmd.xml
+++ /dev/null
@@ -1,271 +0,0 @@
-<?xml version="1.0"?>
-<!--
-  ~ pmd.xml
-  ~
-  ~ Copyright (c) 2010-2020, Erik C. Thauvin (erik@thauvin.net)
-  ~ All rights reserved.
-  -->
-
-<ruleset name="erik"
-         xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 https://pmd.sourceforge.io/ruleset_2_0_0.xsd">
-    <description>Erik's Ruleset</description>
-    <!-- BEST PRACTICES -->
-    <!--    <rule ref="category/java/bestpractices.xml/AvoidStringBufferField"/>-->
-    <rule ref="category/java/bestpractices.xml/AvoidUsingHardCodedIP"/>
-    <rule ref="category/java/bestpractices.xml/CheckResultSet"/>
-    <rule ref="category/java/bestpractices.xml/ConstantsInInterface"/>
-    <rule ref="category/java/bestpractices.xml/DefaultLabelNotLastInSwitchStmt"/>
-    <rule ref="category/java/bestpractices.xml/ForLoopCanBeForeach"/>
-    <rule ref="category/java/bestpractices.xml/GuardLogStatement"/>
-    <!-- <rule ref="category/java/bestpractices.xml/LooseCoupling"/> -->
-    <rule ref="category/java/bestpractices.xml/MethodReturnsInternalArray"/>
-    <rule ref="category/java/bestpractices.xml/MissingOverride">
-        <properties>
-            <property name="violationSuppressXPath"
-                      value="./MethodDeclarator[@Image='hashCode' or @Image='equals' or @Image='toString']"/>
-        </properties>
-    </rule>
-    <rule ref="category/java/bestpractices.xml/PositionLiteralsFirstInCaseInsensitiveComparisons"/>
-    <rule ref="category/java/bestpractices.xml/PositionLiteralsFirstInComparisons"/>
-    <rule ref="category/java/bestpractices.xml/PreserveStackTrace"/>
-    <rule ref="category/java/bestpractices.xml/ReplaceEnumerationWithIterator"/>
-    <!-- <rule ref="category/java/bestpractices.xml/ReplaceHashtableWithMap"/>
-    <rule ref="category/java/bestpractices.xml/ReplaceVectorWithList"/> -->
-    <rule ref="category/java/bestpractices.xml/SwitchStmtsShouldHaveDefault"/>
-    <rule ref="category/java/bestpractices.xml/SystemPrintln"/>
-    <rule ref="category/java/bestpractices.xml/UnusedFormalParameter"/>
-    <rule ref="category/java/bestpractices.xml/UnusedImports"/>
-    <rule ref="category/java/bestpractices.xml/UnusedLocalVariable"/>
-    <rule ref="category/java/bestpractices.xml/UnusedPrivateField"/>
-    <rule ref="category/java/bestpractices.xml/UnusedPrivateMethod"/>
-    <rule ref="category/java/bestpractices.xml/UseAssertEqualsInsteadOfAssertTrue"/>
-    <rule ref="category/java/bestpractices.xml/UseAssertNullInsteadOfAssertTrue"/>
-    <rule ref="category/java/bestpractices.xml/UseAssertSameInsteadOfAssertTrue"/>
-    <rule ref="category/java/bestpractices.xml/UseAssertTrueInsteadOfAssertEquals"/>
-    <rule ref="category/java/bestpractices.xml/UseCollectionIsEmpty"/>
-    <rule ref="category/java/bestpractices.xml/UseVarargs"/>
-
-
-    <!-- NAMING CONVENTIONS -->
-    <rule ref="category/java/codestyle.xml/FormalParameterNamingConventions"/>
-    <rule ref="category/java/codestyle.xml/GenericsNaming"/>
-    <rule ref="category/java/codestyle.xml/LocalVariableNamingConventions"/>
-    <rule ref="category/java/codestyle.xml/MethodNamingConventions"/>
-    <!--    <rule ref="category/java/codestyle.xml/PackageCase"/>-->
-
-
-    <!-- OTHER -->
-    <rule ref="category/java/codestyle.xml/AvoidDollarSigns"/>
-    <rule ref="category/java/codestyle.xml/AvoidProtectedFieldInFinalClass"/>
-    <rule ref="category/java/codestyle.xml/AvoidProtectedMethodInFinalClassNotExtending"/>
-    <rule ref="category/java/codestyle.xml/AvoidUsingNativeCode"/>
-    <rule ref="category/java/codestyle.xml/BooleanGetMethodName"/>
-    <rule ref="category/java/codestyle.xml/CallSuperInConstructor"/>
-    <rule ref="category/java/codestyle.xml/ControlStatementBraces"/>
-    <rule ref="category/java/codestyle.xml/DontImportJavaLang"/>
-    <rule ref="category/java/codestyle.xml/DuplicateImports"/>
-    <rule ref="category/java/codestyle.xml/EmptyMethodInAbstractClassShouldBeAbstract"/>
-    <rule ref="category/java/codestyle.xml/ExtendsObject"/>
-    <rule ref="category/java/codestyle.xml/FieldDeclarationsShouldBeAtStartOfClass"/>
-    <rule ref="category/java/codestyle.xml/ForLoopShouldBeWhileLoop"/>
-    <rule ref="category/java/codestyle.xml/IdenticalCatchBranches"/>
-    <rule ref="category/java/codestyle.xml/LocalVariableCouldBeFinal"/>
-    <rule ref="category/java/codestyle.xml/MethodArgumentCouldBeFinal"/>
-    <rule ref="category/java/codestyle.xml/NoPackage"/>
-    <rule ref="category/java/codestyle.xml/PrematureDeclaration"/>
-    <rule ref="category/java/codestyle.xml/TooManyStaticImports"/>
-    <rule ref="category/java/codestyle.xml/UnnecessaryAnnotationValueElement"/>
-    <rule ref="category/java/codestyle.xml/UnnecessaryConstructor"/>
-    <rule ref="category/java/codestyle.xml/UnnecessaryFullyQualifiedName"/>
-    <rule ref="category/java/codestyle.xml/UnnecessaryLocalBeforeReturn"/>
-    <rule ref="category/java/codestyle.xml/UnnecessaryReturn"/>
-    <rule ref="category/java/codestyle.xml/UselessQualifiedThis"/>
-
-
-    <!-- DESIGN -->
-    <rule ref="category/java/design.xml/AbstractClassWithoutAnyMethod"/>
-    <rule ref="category/java/design.xml/AvoidRethrowingException"/>
-    <rule ref="category/java/design.xml/AvoidThrowingNewInstanceOfSameException"/>
-    <rule ref="category/java/design.xml/AvoidThrowingNullPointerException"/>
-    <rule ref="category/java/design.xml/AvoidThrowingRawExceptionTypes"/>
-    <rule ref="category/java/design.xml/ClassWithOnlyPrivateConstructorsShouldBeFinal"/>
-    <rule ref="category/java/design.xml/CollapsibleIfStatements"/>
-    <rule ref="category/java/design.xml/CouplingBetweenObjects"/>
-    <rule ref="category/java/design.xml/DataClass"/>
-    <rule ref="category/java/design.xml/DoNotExtendJavaLangError"/>
-    <rule ref="category/java/design.xml/ExceptionAsFlowControl"/>
-    <!--    <rule ref="category/java/design.xml/ExcessivePublicCount"/>-->
-    <rule ref="category/java/design.xml/FinalFieldCouldBeStatic"/>
-    <rule ref="category/java/design.xml/ImmutableField"/>
-    <rule ref="category/java/design.xml/LogicInversion"/>
-    <rule ref="category/java/design.xml/SignatureDeclareThrowsException"/>
-    <rule ref="category/java/design.xml/SimplifiedTernary"/>
-    <rule ref="category/java/design.xml/SimplifyBooleanAssertion"/>
-    <rule ref="category/java/design.xml/SimplifyBooleanExpressions"/>
-    <rule ref="category/java/design.xml/SimplifyBooleanReturns"/>
-    <rule ref="category/java/design.xml/SimplifyConditional"/>
-    <rule ref="category/java/design.xml/SingularField"/>
-    <rule ref="category/java/design.xml/SwitchDensity"/>
-    <rule ref="category/java/design.xml/UselessOverridingMethod"/>
-    <rule ref="category/java/design.xml/UseUtilityClass"/>
-
-    <!-- DOCUMENTATION -->
-    <rule ref="category/java/documentation.xml/UncommentedEmptyConstructor"/>
-    <rule ref="category/java/documentation.xml/UncommentedEmptyMethodBody"/>
-
-
-    <!-- ERROR PRONE -->
-    <rule ref="category/java/errorprone.xml/AssignmentInOperand">
-        <properties>
-            <property name="allowWhile" value="true"/>
-            <property name="allowFor" value="true"/>
-            <property name="allowIf" value="true"/>
-        </properties>
-    </rule>
-    <rule ref="category/java/errorprone.xml/AssignmentToNonFinalStatic"/>
-    <rule ref="category/java/errorprone.xml/AvoidAccessibilityAlteration"/>
-    <rule ref="category/java/errorprone.xml/AvoidAssertAsIdentifier"/>
-    <rule ref="category/java/errorprone.xml/AvoidBranchingStatementAsLastInLoop"/>
-    <rule ref="category/java/errorprone.xml/AvoidCallingFinalize"/>
-    <rule ref="category/java/errorprone.xml/AvoidCatchingThrowable"/>
-    <rule ref="category/java/errorprone.xml/AvoidDecimalLiteralsInBigDecimalConstructor"/>
-    <rule ref="category/java/errorprone.xml/AvoidDuplicateLiterals">
-        <properties>
-            <property name="skipAnnotations" value="true"/>
-        </properties>
-    </rule>
-    <rule ref="category/java/errorprone.xml/AvoidEnumAsIdentifier"/>
-    <rule ref="category/java/errorprone.xml/AvoidInstanceofChecksInCatchClause"/>
-    <rule ref="category/java/errorprone.xml/AvoidLosingExceptionInformation"/>
-    <rule ref="category/java/errorprone.xml/AvoidMultipleUnaryOperators"/>
-    <rule ref="category/java/errorprone.xml/AvoidUsingOctalValues"/>
-    <rule ref="category/java/errorprone.xml/BadComparison"/>
-    <rule ref="category/java/errorprone.xml/BrokenNullCheck"/>
-    <rule ref="category/java/errorprone.xml/CallSuperFirst"/>
-    <rule ref="category/java/errorprone.xml/CallSuperLast"/>
-    <rule ref="category/java/errorprone.xml/CheckSkipResult"/>
-    <rule ref="category/java/errorprone.xml/ClassCastExceptionWithToArray"/>
-    <rule ref="category/java/errorprone.xml/CloneMethodMustBePublic"/>
-    <rule ref="category/java/errorprone.xml/CloneMethodMustImplementCloneable"/>
-    <rule ref="category/java/errorprone.xml/CloneMethodReturnTypeMustMatchClassName"/>
-    <rule ref="category/java/errorprone.xml/CloneThrowsCloneNotSupportedException"/>
-    <rule ref="category/java/errorprone.xml/CloseResource"/>
-    <rule ref="category/java/errorprone.xml/CompareObjectsWithEquals"/>
-    <rule ref="category/java/errorprone.xml/ConstructorCallsOverridableMethod"/>>
-    <rule ref="category/java/errorprone.xml/DoNotCallGarbageCollectionExplicitly"/>
-    <rule ref="category/java/errorprone.xml/DoNotExtendJavaLangThrowable"/>
-    <rule ref="category/java/errorprone.xml/DoNotHardCodeSDCard"/>
-    <rule ref="category/java/errorprone.xml/DoNotThrowExceptionInFinally"/>
-    <rule ref="category/java/errorprone.xml/DontImportSun"/>
-    <rule ref="category/java/errorprone.xml/DontUseFloatTypeForLoopIndices"/>
-    <rule ref="category/java/errorprone.xml/EqualsNull"/>
-    <rule ref="category/java/errorprone.xml/FinalizeDoesNotCallSuperFinalize"/>
-    <rule ref="category/java/errorprone.xml/FinalizeOnlyCallsSuperFinalize"/>
-    <rule ref="category/java/errorprone.xml/FinalizeOverloaded"/>
-    <rule ref="category/java/errorprone.xml/FinalizeShouldBeProtected"/>
-    <rule ref="category/java/errorprone.xml/IdempotentOperations"/>
-    <rule ref="category/java/errorprone.xml/ImportFromSamePackage"/>
-    <rule ref="category/java/errorprone.xml/InstantiationToGetClass"/>
-    <rule ref="category/java/errorprone.xml/InvalidLogMessageFormat"/>
-    <rule ref="category/java/errorprone.xml/JumbledIncrementer"/>
-    <rule ref="category/java/errorprone.xml/JUnitSpelling"/>
-    <rule ref="category/java/errorprone.xml/JUnitStaticSuite"/>
-    <rule ref="category/java/errorprone.xml/MethodWithSameNameAsEnclosingClass"/>
-    <rule ref="category/java/errorprone.xml/MisplacedNullCheck"/>
-    <rule ref="category/java/errorprone.xml/MissingBreakInSwitch"/>
-    <rule ref="category/java/errorprone.xml/MissingSerialVersionUID"/>
-    <rule ref="category/java/errorprone.xml/MissingStaticMethodInNonInstantiatableClass"/>
-    <rule ref="category/java/errorprone.xml/MoreThanOneLogger"/>
-    <rule ref="category/java/errorprone.xml/NonCaseLabelInSwitchStatement"/>
-    <rule ref="category/java/errorprone.xml/NonStaticInitializer"/>
-    <!--    <rule ref="category/java/errorprone.xml/NullAssignment"/>-->
-    <rule ref="category/java/errorprone.xml/OverrideBothEqualsAndHashcode"/>
-    <rule ref="category/java/errorprone.xml/ProperCloneImplementation"/>
-    <rule ref="category/java/errorprone.xml/ProperLogger"/>
-    <rule ref="category/java/errorprone.xml/ReturnEmptyArrayRatherThanNull"/>
-    <rule ref="category/java/errorprone.xml/ReturnFromFinallyBlock"/>
-    <rule ref="category/java/errorprone.xml/SimpleDateFormatNeedsLocale"/>
-    <rule ref="category/java/errorprone.xml/SingleMethodSingleton"/>
-    <rule ref="category/java/errorprone.xml/SingletonClassReturningNewInstance"/>
-    <rule ref="category/java/errorprone.xml/StaticEJBFieldShouldBeFinal"/>
-    <rule ref="category/java/errorprone.xml/StringBufferInstantiationWithChar"/>
-    <rule ref="category/java/errorprone.xml/SuspiciousEqualsMethodName"/>
-    <rule ref="category/java/errorprone.xml/SuspiciousHashcodeMethodName"/>
-    <rule ref="category/java/errorprone.xml/SuspiciousOctalEscape"/>
-    <rule ref="category/java/errorprone.xml/TestClassWithoutTestCases"/>
-    <rule ref="category/java/errorprone.xml/UnconditionalIfStatement"/>
-    <rule ref="category/java/errorprone.xml/UnnecessaryBooleanAssertion"/>
-    <rule ref="category/java/errorprone.xml/UnnecessaryCaseChange"/>
-    <rule ref="category/java/errorprone.xml/UnnecessaryConversionTemporary"/>
-    <rule ref="category/java/errorprone.xml/UnusedNullCheckInEquals"/>
-    <rule ref="category/java/errorprone.xml/UseCorrectExceptionLogging"/>
-    <rule ref="category/java/errorprone.xml/UseEqualsToCompareStrings"/>
-    <rule ref="category/java/errorprone.xml/UselessOperationOnImmutable"/>
-    <rule ref="category/java/errorprone.xml/UseLocaleWithCaseConversions"/>
-    <rule ref="category/java/errorprone.xml/EmptyCatchBlock">
-        <properties>
-            <property name="allowExceptionNameRegex">
-                <value>^ignore$</value>
-            </property>
-        </properties>
-    </rule>
-    <rule ref="category/java/errorprone.xml/EmptyFinalizer"/>
-    <rule ref="category/java/errorprone.xml/EmptyFinallyBlock"/>
-    <rule ref="category/java/errorprone.xml/EmptyIfStmt"/>
-    <rule ref="category/java/errorprone.xml/EmptyInitializer"/>
-    <rule ref="category/java/errorprone.xml/EmptyStatementBlock"/>
-    <rule ref="category/java/errorprone.xml/EmptyStatementNotInLoop"/>
-    <rule ref="category/java/errorprone.xml/EmptySwitchStatements"/>
-    <rule ref="category/java/errorprone.xml/EmptySynchronizedBlock"/>
-    <rule ref="category/java/errorprone.xml/EmptyTryBlock"/>
-    <rule ref="category/java/errorprone.xml/EmptyWhileStmt"/>
-
-
-    <!-- MULTITHREADING -->
-    <rule ref="category/java/multithreading.xml/AvoidSynchronizedAtMethodLevel"/>
-    <rule ref="category/java/multithreading.xml/AvoidThreadGroup"/>
-    <rule ref="category/java/multithreading.xml/AvoidUsingVolatile"/>
-    <rule ref="category/java/multithreading.xml/DontCallThreadRun"/>
-    <rule ref="category/java/multithreading.xml/DoubleCheckedLocking"/>
-    <rule ref="category/java/multithreading.xml/NonThreadSafeSingleton"/>
-    <rule ref="category/java/multithreading.xml/UseConcurrentHashMap"/>
-    <rule ref="category/java/multithreading.xml/UseNotifyAllInsteadOfNotify"/>
-
-    <!-- PERFORMANCE -->
-    <rule ref="category/java/performance.xml/AddEmptyString"/>
-    <rule ref="category/java/performance.xml/AppendCharacterWithChar"/>
-    <rule ref="category/java/performance.xml/AvoidArrayLoops"/>
-    <rule ref="category/java/performance.xml/AvoidFileStream"/>
-    <rule ref="category/java/performance.xml/AvoidInstantiatingObjectsInLoops"/>
-    <rule ref="category/java/performance.xml/AvoidUsingShortType"/>
-    <rule ref="category/java/performance.xml/BigIntegerInstantiation"/>
-    <rule ref="category/java/performance.xml/BooleanInstantiation"/>
-    <rule ref="category/java/performance.xml/ByteInstantiation"/>
-    <rule ref="category/java/performance.xml/ConsecutiveAppendsShouldReuse"/>
-    <rule ref="category/java/performance.xml/ConsecutiveLiteralAppends"/>
-    <rule ref="category/java/performance.xml/InefficientEmptyStringCheck"/>
-    <rule ref="category/java/performance.xml/InefficientStringBuffering"/>
-    <rule ref="category/java/performance.xml/InsufficientStringBufferDeclaration"/>
-    <rule ref="category/java/performance.xml/IntegerInstantiation"/>
-    <rule ref="category/java/performance.xml/LongInstantiation"/>
-    <rule ref="category/java/performance.xml/OptimizableToArrayCall"/>
-    <rule ref="category/java/performance.xml/RedundantFieldInitializer"/>
-    <rule ref="category/java/performance.xml/SimplifyStartsWith"/>
-    <rule ref="category/java/performance.xml/ShortInstantiation"/>
-    <rule ref="category/java/performance.xml/StringInstantiation"/>
-    <rule ref="category/java/performance.xml/StringToString"/>
-    <rule ref="category/java/performance.xml/TooFewBranchesForASwitchStatement"/>
-    <rule ref="category/java/performance.xml/UnnecessaryWrapperObjectCreation"/>
-    <!-- <rule ref="category/java/performance.xml/UseArrayListInsteadOfVector"/> -->
-    <rule ref="category/java/performance.xml/UseArraysAsList"/>
-    <rule ref="category/java/performance.xml/UseIndexOfChar"/>
-    <rule ref="category/java/performance.xml/UselessStringValueOf"/>
-    <rule ref="category/java/performance.xml/UseStringBufferForStringAppends"/>
-    <rule ref="category/java/performance.xml/UseStringBufferLength"/>
-
-    <!-- SECURITY -->
-    <rule ref="category/java/security.xml/HardCodedCryptoKey"/>
-    <rule ref="category/java/security.xml/InsecureCryptoIv"/>
-</ruleset>
diff --git a/config/spotbugs/excludeFilter.xml b/config/spotbugs/excludeFilter.xml
deleted file mode 100644
index ddb2db1..0000000
--- a/config/spotbugs/excludeFilter.xml
+++ /dev/null
@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<FindBugsFilter
-        xmlns="https://github.com/spotbugs/filter/3.0.0"
-        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="https://github.com/spotbugs/filter/3.0.0 https://raw.githubusercontent.com/spotbugs/spotbugs/3.1.0/spotbugs/etc/findbugsfilter.xsd">
-    <!--    <Match>
-            <Package name="com.foobar.*"/>
-            <Class name="com.foobar.MyClass"/>
-            <Or>
-                <Method name="someMethod"/>
-                <Method name="someOtherMethod"/>
-            </Or>
-            <Bug pattern="DLS_DEAD_LOCAL_STORE"/>
-            <Confidence value="2"/>
-        </Match>-->
-</FindBugsFilter>