Improve Handler.match so that pattern elements can be Arrays containing multiple tags
Improve Separators

Change SeparatorSlashOrDash to separate Slash and Dash
Add more separator types (Dot, Colon, Space, Quote, T, W)
Refactor Scalar and Ordinal parsing classes

Create Date and Time classes
Add Sign class
Add :hours24 option for Parser so can force 24-hour clock
Simplify `could_be_*` methods
Merge pull request #202 from davispuh/parser_improvements

Parser improvements