Makagiga / 2.4 - release notes

See also previous release notes:
2.3 Beta, 2.3.1 Beta, 2.3.2 Beta

* Improved export to vCalendar file (.vcs)
* Updated Polish translation
* Updated splash screen

API/Source:

* NEW: Added "ColumnManager" class (see MTable.getColumnManager)
* Added new MColor definitions
* Removed deprecated unit tests
* Use "reflection" to suppress compiler warnings
* Replaced deprecated API
* Fixed pie chart painter