Add SQL Support

[tomasr]

• Add SQL Support for Rainbow Parentheses
• Control Flow Keywords: BEGIN, END, BREAK, CONTINUE, GOTO, IF, ELSE, RETURN, THROW, TRY, CATCH, WAITFOR, WHILE (from http://technet.microsoft.com/en-us/library/ms174290.aspx)
• Visibility Keywords: EXTERNAL, PUBLIC
• Statement Keywords SELECT, UPDATE, INSERT, DELETE, MERGE (From http://technet.microsoft.com/en-us/library/ff848766.aspx)

[tomasr]

Implemented in v1.3