This is based on [1] and converted to sublime-syntax using [2].

[1] https://github.com/wmertens/sublime-nix
[2] https://github.com/aziz/SublimeSyntaxConvertor

Fix #613

Also fix tests

Close #367, #372

Closes #277

And add Prolog (closes #170)

Fix #51

The packdumps contains the fixed Linker syntax too so it can be
used

Also fix gutenberg serve that has been broken (not
re-rendering content) for quite some time now.