Update df-tileset.js
Half-working multibyte support (tags unreliable)
Fix multibyte tag bug
Clean up multibyte support

Closes #12
Frame support
Improve frame support

* Implement frame attributes
* Pass frame attributes to HTML using data- attributes
* Require closing tags for frames
Update df-tileset.js

Add focusing support
Separate canvases into frames (JS)
Levels (JS)
Fix non-zero original levels
Clean up level tests
Better frame attribute support

* Made quoted values optional in more cases
* Improved parsing - unquoted final attributes no longer fail
Make keycodes work in Firefox

* Use event.which instead of event.keyCode
* Update df-tileset.js
Update README.md
Integration with MediaWiki preferences

* Canvas display is now optional (implemented in a separate ResourceLoader module - ext.DFDiagram.canvas)
Merge branch 'master' of https://github.com/lethosor/DFDiagram
Update README.md
i18n file
Default tileset