Added `Nothing.to_number` getter

Added new HTTP methods

Added multiple IDE build scripts

Set correct version number (2.5.1)

Upgraded Roo module

Added DateTime.to_http_header getter

Updated Roo to 2.4.0

Updated to Roo 2.3.0

Added the DateTime data type and many additions to the File data type. Also adds the FileUtils module.

Updated to Roo 2.3.0

Added the DateTime data type and many additions to the File data type. Also adds the FileUtils module.

Updated README