> Per https://msdn.microsoft.com/en-us/library/ee156918.aspx, this parser rule is not correct:
https://github.com/rubberduck-vba/Rubberduck/blob/e2468806b7da88f20ca28a4ea0f08edb92cacd78/Rubberduck.Parsing/Grammar/VBAParser.g4#L467
`ASSIGN` should be `EQ`. This should be fixed, and also a test added.
Related: Not sure if it's desirable to have `ASSIGN` defined in the lexer. The only other place it appears to be used is for named arguments, which could equally well be parsed with `COLON E