Highlight improvements

[aspeddro]

1. Extension points: %raw, %%raw, %re
2. Top level Attribute: @@attribute
3. Highlight list in list{...} as Function
4. Highlight [, ], (, ) { and }
5. Link open and include to Include
6. Link try catch exception assert to Exception
7. Link for to downto while to Repeat
8. Add promise type
9. Move | to resDelimiter group.

#68

[ryyppy]

Can you add some quick example in some of the test fixture files (or a new separate test fixture file), so it's easy to visually verify the change locally?

[aspeddro]

I changed in to Repeat group

[aspeddro]

Added support to custom operators \"op"

[ryyppy]

lgtm. Feel free to merge (you should have write credentials by now).