Integrate CSS Speech Box Model, improve user agent stylesheet.

Refine useragent CSS to use less 'voice-rate: x-slow' and more 'voice-pitch'.

Upgrade to nonbroken Stylish Haskell.

Psuedo-elements/classes do run, just not correctly.

Integrate stylizer, fix/silence errors.

Stylish Haskell's parser is freezing upon certain syntaxes,
the commented out code indicates that Rhapsode's logic is fine.

Fixes for CSS engine.

* Package default stylesheet in executable.
* Test for media attribute.
* Decode CSS responses correctly.