Support for multiline strings
Added support for literal strings
Loop over parsers
Removed regexes from BooleanParser and IntegerParser and using Parboiled
instead
Renamed ValueParser to ValueConverter and associated changes
Renamed StatementParser to ValueParser
ValueConverterUtils.parse() and ValueConverterUtils.parser() make it
easier to use Parboiled.
Introduced Multiline enum to clean TomlParser up a bit
Renamed ValueParser#String() to ValueParser#StringToken() to avoid
conflicts/confusion with Parboiled method.
Removed unused variable and added static imports.
Parse multiline string literals and all multiline strings with text on
the first line