Finished updating documentation for release 1.4.
Improved installer (added OS choice)
Updated txt files.
Added support for arrow parameters to JPIC-XML formatter and parser.
Added API-DOC to install dirs
Re-sync i18n_en with other languages
Irrelevant minor updates.
Refactored method names
Improved code documentation
Bug fix: buttons flags not properly reported when combined with CTRL modifiers
