Tune editor experience for GString, following the editor cookbook tips (see http://confluence.jetbrains.com/display/MPSD30/Editor+cookbook#Editorcookbook-Adjustabstractsyntaxforeasyediting).
Increase version number to 13.
Replace nyosh-runtime-support-1.1.1 with 1.1.2-SNAPSHOT.
Improve usability of the Path editor.
Upgrade lib language to the most recent version of the libraries. Add the new JARs to the distribution.