0.3.0 - 090419
* documentation bug fixed: the latcher is not delayed
* added dot (Graphviz) converter

0.2.0 - 090412
* removed primitives time and stateless
* removed default delay on stateful combinators and added experimental cycle detection
* added some non-primitive combinators: delay, edge, comparisons, logic relations
* added signal instances for various numeric classes

0.1.0 - 090410
* first public version