diff --git a/.idea/libraries-with-intellij-classes.xml b/.idea/libraries-with-intellij-classes.xml
new file mode 100644
index 0000000..9fa3156
--- /dev/null
+++ b/.idea/libraries-with-intellij-classes.xml
@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="libraries-with-intellij-classes">
+    <option name="intellijApiContainingLibraries">
+      <list>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="ideaIU" />
+          <option name="groupId" value="com.jetbrains.intellij.idea" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="ideaIU" />
+          <option name="groupId" value="com.jetbrains" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="ideaIC" />
+          <option name="groupId" value="com.jetbrains.intellij.idea" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="ideaIC" />
+          <option name="groupId" value="com.jetbrains" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="pycharmPY" />
+          <option name="groupId" value="com.jetbrains.intellij.pycharm" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="pycharmPY" />
+          <option name="groupId" value="com.jetbrains" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="pycharmPC" />
+          <option name="groupId" value="com.jetbrains.intellij.pycharm" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="pycharmPC" />
+          <option name="groupId" value="com.jetbrains" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="clion" />
+          <option name="groupId" value="com.jetbrains.intellij.clion" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="clion" />
+          <option name="groupId" value="com.jetbrains" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="riderRD" />
+          <option name="groupId" value="com.jetbrains.intellij.rider" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="riderRD" />
+          <option name="groupId" value="com.jetbrains" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="goland" />
+          <option name="groupId" value="com.jetbrains.intellij.goland" />
+        </LibraryCoordinatesState>
+        <LibraryCoordinatesState>
+          <option name="artifactId" value="goland" />
+          <option name="groupId" value="com.jetbrains" />
+        </LibraryCoordinatesState>
+      </list>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/semver.iml b/.idea/semver.iml
deleted file mode 100644
index 78b2cc5..0000000
--- a/.idea/semver.iml
+++ /dev/null
@@ -1,2 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="JAVA_MODULE" version="4" />
\ No newline at end of file
diff --git a/README.md b/README.md
index 925e813..1800a7b 100644
--- a/README.md
+++ b/README.md
@@ -222,7 +222,7 @@ In order to also incorporate the generated source code into the `source tree`, a
 
 ```gradle
 tasks.withType(JavaCompile) {
-    options.annotationProcessorGeneratedSourcesDirectory = file("${projectDir}/src/generated/java")
+    options.generatedSourceOutputDirectory.set(file("${projectDir}/src/generated/java"))
 }
 ```
 
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/examples/java/build.gradle b/examples/java/build.gradle
index 5521c85..faa5849 100644
--- a/examples/java/build.gradle
+++ b/examples/java/build.gradle
@@ -27,12 +27,12 @@ dependencies {
 }
 
 tasks.withType(JavaCompile) {
-    options.annotationProcessorGeneratedSourcesDirectory = file("${projectDir}/src/generated/java")
+    options.generatedSourceOutputDirectory.set(file("${projectDir}/src/generated/java"))
     options.compilerArgs += [ "-Asemver.project.dir=$projectDir" ]
 }
 
 task runExample(type: JavaExec) {
     group = 'application'
     classpath = sourceSets.main.runtimeClasspath
-    mainClass = 'com.example.Example'
+    mainClass.set('com.example.Example')
 }