v0.9.0

Release notes

Added

• util rtt command now supports --logfile with which you can specify file
  into which to store RTT logs (#42).
• debug command which uses west debug or (west attach) to connect to the
  board and start a debugging session.

Changed

• Add back functionality to provide cmake_args after -- marker for build
  command. Now it is possible to provide custom -D define values to the
  CMake. Commands flash, bypass already provided option for extra
  arguments after --, however they did it incorrectly for very edge cases,
  as they removed double quotes from all arguments passed after -- marker
  (#56).

Fixed

• Ton of spelling mistakes in the code and comments.