Checkstyle 6.19

[Roman Ivanov]

Checkstyle 6.19 - http://checkstyle.sourceforge.net/releasenotes.html#Release_6.19

Breaking backward compatibility:

  Issue #3187: aligned setters with String collection fields and broke old compatibility.

New:

  new Check: SingleSpaceSeparator.

  ReturnCount: special option for methods with void return type.

  new CLI argument: provide abililty to show debug level of logs from checkstyle code.

  Fix cache usage in presence of filters.

Bug fixes:

  CLI Javadoc tree printer doesn't show errors.

  Block Comments: CR lines not handled the same as LF lines.

  IllegalTokenTextCheck and IllegalTokenCheck does not work with COMMENT_CONTENT token.

  Indentation: throwsIndent should configure indentation of `throws` on next line.

  UnusedImports: value javadoc tag does not reference imports.

Notes:

  FileContents confused about number of lines in comment separated by '\r'.

  Create web-page with instructions: how to create Javadoc Check.

  XDoc Config: create unit test to verify property types and default values.

  Some PullRequests validation for commit mesage miss some cases.

  AnnotationLocation: unclear behavior when annotation is among modifiers.

  Documentation for ANT property config is incorrect.

  Sevntu CS not running on all CS code.

  Update version of commons-collections to 3.2.2(from 3.2.1) to fix security vulnerability CVE-2015-6420.

  doc: Indentation property description become worded in the same way.