Allow multiple parser implementations
Create a new ruby_parser backed parser, handle integers, strings and arrays
Add support for hashes in RubyParser and fix bug un Ripper for empty hash parsing
Test regexp parsing and add support to flagged regexp in RipperParser
Add support for nil, true and false in RubyParser
Add support for literral ranges in RubyParser
Add support for constants and variable referencing in RubyParser
Add support for simple method calls in RubyParser
Ensure support for method calls ending with "!" or "?"
Add support for methods with arguments in RubyParser