Fixes #25 - MissingMethodException trying to run custom rule with recent Groovy version
Merge pull request #26 from joesondow/compatibility-with-later-Groovy-versions

Fixes #25 - MissingMethodException error on custom rule with recent Groovy
 #146: Fix SpaceAroundOperator: Does not catch some violations with elvis operator (?:)
#139: Fix JUnitPublicField – ignore interfaces.
#430: SpaceAroundMapEntryColon rule - Check for proper formatting of whitespace around ':' for literal Map entries
#431: Remove unused "samples" folder.
#432: Add checkLastStatementImplicitElse property on IfStatementCouldBeTernary and UnnecessaryIfStatement.
#434: Remove duplicate logging of CodeNarc results
#433: Rename BaseSourceAnalyzer to AbstractSourceAnalyzer
#427: ClosureStatementOnOpeningLineOfMultipleLineClosure
#427: ClosureStatementOnOpeningLineOfMultipleLineClosure
Change formatting rule to priority 3
Change formatting rule to priority 3
Change formatting rule to priority 3
v0.20
v0.20
[maven-release-plugin] prepare release CodeNarc-0.20
[maven-release-plugin] prepare for next development iteration
Added MassAssignmentRule
finished mass assignment rule