Minihmm

---------------------

- Model reduction tested and working, even though unit tests not yet
fleshed out

- Valid pseudocount arrays now generated for state priors in high order space
(before was only for transition tables)

- Added warnings in places where unexpected side effects could be caused by
valid calculations (e.g. uncaught `nan`)

- Serialization sketched out for FirstOrderHMMs

---------------------

Added
......

- Methods for serializing and deserializing large matrices to JSON

- Methods for reducing high-order models to first-order models, and
for converting state sequences between orders

- Yet more unit tests

------

Added
.....

- Can now sample state paths given an observation sequence, from the
conditional distribution :math:`P(Path | observation sequence)`

- Unit tests


Changed
.......

- miniHMM factored out of unpublished scientific project

- Migration from SVN to GIT repo

- get_free_parameters() and from_parameters() replaced by serialize()
and deserialize() methods in all factors