Checkstyle 8.23

[Roman Ivanov]

Checkstyle 8.23 - https://checkstyle.org/releasenotes.html#Release_8.23

New:
  new filter SuppressionSingleFilter 
  OneStatementPerLine: add treatTryResourcesAsStatement property
  MagicNumber: Ignore magic numbers in annotation default values
  new check: InvalidJavadocPosition

Bug fixes:
  InnerAssignment reports violation when && condition is in WHILE expression
  SuppressWithPlainTextCommentFilter ignores messageFormat when matching on ID
  Javadoc mishandling NEWLINE when next to ATTRIBUTE
  SuppressWithNearbyCommentFilter does not match messages
  SuppressionCommentFilter ignores messageFormat when matching on ID
  InvalidJavadocPositionCheck: false negative on javadocs with local variables 

Notes:
  doc: Serialisation -> serialization
  Replace sevntu-checkstyle-maven-plugin with explicit dependency to sevntu-checks
  pitest: increase mutation coverage for pitest-checks-coding profile to 100%
  Skip dry run build item for maven release commit
   format xdoc/javadoc files to follow rule of LineLength (max ia 100)
  pitest: increase mutation coverage for pitest-filters profile to 100%
  Don't use absolute checkstyle links in xdocs
  Create appveyor.bat for CI commands
   Align XDocs and Javadocs for filters package 
  doc: Add missing slash for constant name check doc
  Make inner class SuppressWithPlainTextCommentFilter.Suppression private
  Enforce FileTabCharacter and RegexpSingleline for trailing whitespace over resources
  Remove TreeWalker#validateDefaultTokens
  Make inner class SuppressionCommentFilter.Tag private
  Make inner class SuppressWithNearbyCommentFilter.Tag private
  Add xpath tests for new Checks of 8.22