* Add paragraph tag support
Add HTML header tags support
Add multi-new line rich text element
Add support for end of tag action
General code clean up
* Remove redundant additions
* Fix compilation issue on platforms other than Windows
* Remove redundant constructors and destructors.
Initialize member variables.
Remove explicit inline specifier since all member class functions are implicitly inlined.
* Add vertical alignment support for RichText
* Simplify RichTextTest implementation by reducing code duplication.
Add vertical alignment button to all RichText tests.
* Remove duplicate include
* [RichText] Vertical alignment support when ignoring size