Top 1: Programming languages support
+ Improve src/System/Language and TeXmacs/progs/prog
+ Automatically insert keywords into auto completion candidates for the related language
Top 2: Unit Test
+ Make unit tests work with both autotools and cmake
+ Travis build on Github
Top 3: Windows and Qt 5
1. Documentation: build/test/package GNU TeXmacs using MXE
2. Improve GNU TeXmacs on Windows (eg. integrate with MS Windows' spell tools)