Syntax Highlight Overhaul (#568)

* Adds new syntax groups and docs
* Large refactor of syntax highlighting files

* Changed keybindings for changing tabs.

* Improved the documentation.

* Added F3 for find to default bindings.

* Massive overhaul of the syntax files

* Phase 1 color-scheme updates.

* The new colorschemes.

* Colorscheme and syntax updates.

* Tiny fix to the cmc theme.

* Another phase of colorschemes and testing gitconfig.

* Fixed haskell error

* Fortran fix

* Delete test.txt

Heh, sorry about forgetting to do this again.

runtime/syntax/gdscript.micro

@@ -18,7 +18,7 @@ color identifier "func [a-zA-Z_0-9]+"
 color statement "\b(and|as|assert|break|breakpoint|class|const|continue|elif|else|export|extends|for|func|if|in|map|not|onready|or|pass|return|signal|var|while|yield)\b" 
 
 ## decorators
-color brightgreen "@.*[(]"
+color special "@.*[(]"
 
 ## operators
 color statement "[.:;,+*|=!\%@]" "<" ">" "/" "-" "&"