merge(dev): more highlights discovered
merge branch 'dev'

@ better forward for clang::c
- removed useless semicolon and namespace
@ parses comments properly in hlgroup.vimlight
@ now supports multi buffer. fix #2
@ const type@ -> type const@, @ can be * or &
better license
merge branch 'dev': fix #13
integrate clang analyzer into build system
fix libclang crash: won't feed invalid data
Merge branch 'dev'
Merge branch 'master' into dev