Added the stringified identifiers to the symbol parsing.
Suppressed all warnings in the output file that's created by jflex
Fixed slot regex for Association which can have the form #foo where foo cannot start with a number, but with letters or $ and after the first letter a combination of letters, numbers and $ is allowed.
Fixed that the rhs of >> and >>> is really parsed as expression so that the behavior is more like what you would expect from MMA
New plugin built for testing