v0.2.0

Items delivered: https://github.com/xonixx/intellij-awk/milestone/2?closed=1

• Gawk features support added!
  • namespaces support
  • @fun
  • @/ERE/
  • switch statement
  • |&
  • multi-dimensional arrays
  • Gawk-specific functions
  • etc.
• Lots of other improvement to all areas of plugin:
  • Improvements/fixes to lexer and parser
  • Cross-file functions and variables navigation added
  • Speed-up due to stubs usage
  • Add variables to Structure View
  • more...