v0.2.0

* Nools now supports true modify!!!
   * This is a major leap forward for `nools` opening the door for more complex actions and expressions in the rules.
* Added support from for `from` conditions in the `rhs`.
* Fixed issue #81
* Fixed issue #82
* Added new `sudoku` web example.
* Added [Send More Money](http://en.wikipedia.org/wiki/Verbal_arithmetic) benchmark see #78.