Add CleanInspector

var_dump and var_export leave a lot to be desired on the readability front.  I worked up a more robust inspector with the following features:

  * Per-type output formatting, aiming for maximal clarity with minimal cruft
  * Nested array and object output
  * Intelligent array truncation for > 10 items (to prevent accidental page spam)
  * Optional color-highlighting for each type, customizable on construction

Really perks things up, IMHO.  :-)  Comments welcome!

![screen shot 2013-05-08 at 1 15 13 pm](https://f.cloud.github.com/assets/1086959/478732/f6b1601c-b802-11e2-8ef1-a46e360be406.png)