1.2

• Assigning nullable to self is now allowed
• Add filtering option
• Add nullarihyon version command
• Add --debug option

Filtering allows to focus warnings on subset of program.

• nullarihyon check --filter ClassName files... prints warnings related to ClassName
• For Xcode integration, add nullfilter file in directory where Xcode project is located in
  • Nullarihyon reads newline delimited list of class names to filter from the file