v.0.2.0

This is a feature release. One of the most important improvements is a support for better system integration with macOS. Now ImageJ/Fiji can be installed in the Application directory. See macOS installation info in the ReadMe

All improvements:

• Use launcher location to infer ij-dir. #5
• Session log is saved to ~/.ijp_imagej_launcher.log to facilitate troubleshooting when not running from command
  prompt. The log is reset for each session. #6
• Better inference of ImageJ directory on macOS - consider launcher being in subdirectory "Contents/MacOS" #7