Performance improvements in all KUTE.dom function and more accurate string parsing.

[thednp]

We're going full D3.js mode with everything about KUTE.js

UPDATE: added a new object with functions for interpolation. Makes slightly bigger core, but lighter plugins.

• number - used in core and all plugins
• array (uses the above number) used in SVG Plugin
• color (uses number) - used in core, CSS Plugin and SVG Plugin
• coords (use the array and number) - used in SVG Plugin only
• unit (like width: 25%) - used in core and plugins

UPDATE: the interpolation functions work fine, improving performance by a small percent, the scroll animation shouldn't jump anymore and perhaps transforms can be improved as well.

UPDATE: some changes to the core, some functions went private for performance reasons

UPDATE: the files in the dist folder will be minified with Google Closure, and it bumps performance by a small percent. Awesome.