0.04 2008-09-16

    * fsolve method - filter+solve in one
    * fix problems with boolean operators (AND/OR)
      in the middle of an operand
    * parsing speed improvements, almost complete rewrite
    * fix skip_next logic in solve and filter
    * cover filter, solve and fsolve with tests
    * update docs

0.03 2008-06-08

    * filter and solve methods
    * constructor
    * doc updates
    * some incompatible API changes

0.02 2007-11-03

    * initial release