RT #75933

- Added HTML5 input type attributes support
- Added a test for filling-in the missing HTML5 input type attributes

Mark also asked to update docs (https://rt.cpan.org/Public/Bug/Display.html?id=75933#txn-1230637), but apparently there's no section for other specs like HTML4. I'm not sure if a section for HTML5 is necessary.
Merge pull request #1 from charsbar/html5

RT #75933: Add support for HTML5 input types.