Modified selected_name to accept simple dotted expressions
Add Case insensitivity for bit string literal prefixes
Add Single line comment removal
Add Case-insensitivity on keywords
Add operator symbols for overloading
Changed String Literal to support more input
Fixed bug in IDENTIFIER rule
Removed useless uppercase rule

Causing issues with one upper case letter identifier
Fixed case where there is a double quote in a string
Merge pull request #7 from sebx86/master

several bugfixes, mainly solving indirect left recursion in the prefix/identifier/simple name loop