GROOVY-2974: IntRange.step overflows near Integer.MAX_VALUE or Integer.MIN_VALUE
GROOVY-6295 escaping angle brackets in GroovyDoc @code and @literal tags
GROOVY-5011: commented out solution sketch
checkstyle
Fixed broken unit tests
Gradle build tweaks:
   * replace .add with .create for task creation
   * fix dependency to ASM in utils.gradle
   * replace trick to compile Groovy with invokedynamic support with direct Gradle support
Applying javadoc fix tool is only necessary for javadoc since groovydoc has the fix
Attempt to fix release build with indy
"null" is not supported as property value
Fixed accidental commit of upgrade to asciidoctor 0.5.0-SNAPSHOT
GROOVY-2974: Minimal clean-up
Fix "dist" target with indy
fixed typo
added arguments for return tags so that the javadoc warning disappear
removed "empty" javadoc comments for private methods, so that javadoc warnings disappear
GROOVY-6307: @TimedInterrupt only partially supports multiple annotations within a single source file
minor refactor: adjust Target to corrrect value
minor refactor: remove trivial dupe in error message
GROOVY-5952: Groovyc doesn't check annotations for missing attributes if variable is annotated
GROOVY-6307: @TimedInterrupt et al only partially supports multiple annotations within a single source file (same changes for @ThreadInterrupt/@ConditionalInterrupt)