Make SCSS rules appear in project symbol list
Revise indentation rules

Not sure if these actually work, but let's give it a try.
PEP257 adjustments for my_sublime_lib.path
Fix non-highlighting of '-' in selectors

Since we need this in SCSS and fix it in the parser/dumper, it became
valid CSScheme and should be highlighted as such.
Improve instructions for modifying settings
Add command palette commands for preferences
Remove now-unused edit parameter of view.clear
Refactor conversion code and make it more OOP

This will make it easier to add Stylus or LESS or pretty much any other
CSS-precompiler. I love template patterns.

Related: #3
Don't try too hard at getting relativ path
Fix wrong reference to syntax file

Introduced by e9e633a26bdd71c69a8842c083fb7b819deb17b8.
Fix error reporting of SCSS family

Gotta return your results when you are finished.
Don't use the file extension when printing errors
Always open the compiled preview on errors

Also use file_path_tuple from sublime_lib.
Catch creating relative path of different drives
Add StylusConverter

Also includes a special syntax definition that's pretty much the same as
Stylus but with a different base scope so I can match a selector on it.

Readme will be updated later when I found out all/more quirks.

Closes #3.
Display correct line number for duplicated atrules
Do the same syntax thing for SASS as with stylus
Don't treat existing stderr output as failure

stylus uses it to print warn messages emitted by "warn(msg)" and neither
stylus nor SASS fail without a non-zero errorcode.
Fix small errors in stylus error reporting
Add an example file for styluscheme

The resulting tmTheme is farily similar to the one from the scss
example.

There must be a better way to "transparentize" in stylus though,
currently I'm using `rgba($col, 0.2)` compared to
`transparentize($col, .8)`.