Changes

0.0.28
- added support for specifying JVM parameters
- environment variables can be cleared now
0.0.27
- updated list of available downloads to include Weka 3.8.4 and 3.9.4
- added comment field in the environments
- added search box below the environments (GUI only), that allows searching in all fields for the entered substring (case-insensitive)
- the create, update and delete commands now have a --quiet flag that suppresses output when commands succeed
- reloading the environments in the GUI no longer leads to flickering
0.0.26
- the Clone action in the GUI now supports setup-only option as well (skips wekafiles dir, no props/no packages)
0.0.25
- switched from inetutils4j to requests4j
0.0.24
- compact state is now kept when reloading environments
0.0.23
- added ability to toggle between compact and full view of environments
- position/size of window and compact view state are now being stored/restored
0.0.22
- added list_pkgs command, which simplifies listing installed/available/all packages
- added Installed packages to user interface, to quickly list installed packages for an environment
- using inetutils4j library now
0.0.21
- added ability to inject custom jars via CLASSPATH environment variable (specified in envvars of environment)
- command-line to launch command is now being output (useful for debugging)
- some minor GUI fixes
0.0.20
- fixed redirect handling of Weka downloads
- added Create button to GUI if no environment yet present
- proxy settings and download of Weka versions now work even if no environment has been created
- all commands in GUI now refresh the environments panel
0.0.19
- fixed unsetting of proxies in the user interface
0.0.18
- added proxy support
- Weka versions can be installed through the user interface now
0.0.17
- added install command for downloading and installing Weka zip files from sourceforge.net
0.0.16
- added support for scripting via the Script command and in the GUI
- some scripting commands:
  - variable support (string or string array), set and unset
  - for-loop for iterating over a block of instructions
  - foreach for iterating over a string array variable
  - simple piping of output (stdout or stderr) through filters (grep, replace, tee)
  - read_lines for reading text file into string array variable
  - search for files (list_files) and directories (list_dirs)
  - deleting of files (del_file) and directories (del_dir)
  - calc for calculating mathematical expressions