Minor updates to Hyperscala site.
Added Markup.attributeSet to allow extending the application of attributes externally.
Bug fix to Tag.getAttribute to remove "-" when looking for a naming convention.
Added colSpan, headers, and rowSpan to tag.Th.
Created prototype functionality for HTML5Compliance that can be "enabled" to dynamically convert non-HTML5 content being parsed by Hyperscala to be updated to HTML5 compliance.
Added additional conversions of HTML codes (&nbsp;, &copy;, etc.) to numeric codes for better XML comprehension in DynamicTag.