Merged multiparameter attributes support into develop
Added info about sanitizing to README

FIXES:
- Fixed bug with raw that caused it to be parsed as attribute
- Added RAW to export list of HTML-TAGS
Fixed bug with invalid CSS selectors

:CHILD and :AFTER generators were altered.
It's not really a bug, it's just my mistake which I made because of misunderstanding of how CSS selectors look like.
1.3.1

NEW:
- Added sanitizer desription to README

FIXES:
- Exported ROW from HTML-TAGS
- Fixed bug which caused raw form to be parsed as attributes form sometimes