Pyknow

+++++

* Implemented the template system.
* Replaced warnings by watchers messages.
* Fixed freeze() with frozen objects.
* Fixed unfreeze() with unfrozen objects.
* Parametrized DefFacts via reset() kwargs.

+++++

* Improved overall performance.

+++++

* Added Python version 3.7 to tox.ini.
* Monkey and bananas example.
* Fixed bug, numeric index args gets repeated in a weird way introduced in `1.4.0`.
* Pass only the defined args in absence of kwargs.

+++++

* Order integer facts keys after making a copy.
* as_dict method for Fact.
* freeze and unfreeze method documentation.
* unfreeze method in pyknow.utils.
* Zebra example from Clips.

+++++

* `pyknow.operator` module.
* Nested matching.
* Added Talk 'Sistemas Expertos en Python con PyKnow - PyConES 2017' to docs
folder.

+++++

* Freeze fact values as the default behavior to address Issue 9.
* Added `pyknow.utils.anyof` to mitigate Issue 7.
* Raise RuntimeError if a fact value is modified after declare().
* Added MATCH and AS objects.