Moved from JCenter to Maven Central.

Updated dependencies.

.gitignore

@@ -1,21 +1,7 @@
-.vscode/*
 !.vscode/extensions.json
 !.vscode/launch.json
 !.vscode/settings.json
 !.vscode/tasks.json
-__pycache__
-.classpath
-.DS_Store
-.gradle
-.history
-.kobalt
-.mtj.tmp/
-.mvn/timing.properties
-.mvn/wrapper/maven-wrapper.jar
-.nb-gradle
-.project
-.scannerwork
-.settings
 *.class
 *.code-workspace
 *.ctxt
@@ -26,7 +12,21 @@ __pycache__
 *.sublime-*
 *.tar.gz
 *.zip
-/**/.idea_modules/
+.DS_Store
+.classpath
+.gradle
+.history
+.kobalt
+.mtj.tmp/
+.mvn/timing.properties
+.mvn/wrapper/maven-wrapper.jar
+.nb-gradle
+.project
+.scannerwork
+.settings
+.vscode/*
+/**/.idea/$CACHE_FILE$
+/**/.idea/$PRODUCT_WORKSPACE_FILE$
 /**/.idea/**/caches/build_file_checksums.ser
 /**/.idea/**/contentModel.xml
 /**/.idea/**/dataSources.ids
@@ -47,8 +47,9 @@ __pycache__
 /**/.idea/**/uiDesigner.xml
 /**/.idea/**/usage.statistics.xml
 /**/.idea/**/workspace.xml
-/**/.idea/$CACHE_FILE$
-/**/.idea/$PRODUCT_WORKSPACE_FILE$
+/**/.idea_modules/
+Thumbs.db
+__pycache__
 atlassian-ide-plugin.xml
 bin/
 build/
@@ -70,6 +71,7 @@ lib/kotlin*
 libs/
 local.properties
 out/
+pom.xml.asc
 pom.xml.next
 pom.xml.releaseBackup
 pom.xml.tag
@@ -79,5 +81,4 @@ project.properties
 release.properties
 target/
 test-output
-Thumbs.db
 venv