Remove <:> from 'matchpairs'

Closes #46.
Highlight comments on the end of lines in SASS
Merge pull request #211 from mengzhuo/master

fix lambda conflict #208 with alter logger.debug into lg
Merge pull request #210 from enriclluelles/expand_span

Adding span# and span. snippets
add CJK support
add some directives
fix code section failed
add figure
Merge pull request #212 from mengzhuo/master

Add new snippets for RST format and optimize for Chinese/Japanese
refactor ruby on rails validations with new style
Merge pull request #213 from babybeasimple/master

refactor ruby on rails validations with new style
Add syntax highlighting to README.md
Add elixir snippets.
Merge pull request #215 from honza/elixir-snippets

Add elixir snippets.
Merge pull request #214 from edgurgel/patch-1

Add syntax highlighting to README.md
Update elixir snippets to stable Elixir lang
Merge pull request #216 from edgurgel/elixir-update

Update elixir snippets to stable Elixir lang
Restore performance benefits of old s:Glob
Add headers to compilers
Track relative vs absolute numbers through inserts

If you change the numbering from relative to absolute and then enter and
exit insert mode, the numbering will revert to relative. This will
track the current state and return to that after leaving insert mode.