removed explicit dependence on TF

bump version to 0.0.9

bump version to 0.0.8

Merge pull request marl#24 from marl/verbosedocstrings

Verbose option in CLI + docstrings

bumping version to 0.0.6

Merge pull request marl#16 from marl/zeropadding

Add support for padding and set default behavior to True. Fixes marl#15

Merge pull request marl#11 from marl/bz2model

Fix bug where model not loaded in python, update readme, bump to v0.0.4
Fixes marl#10

preparing release v0.0.3

using imp instead of importlib for versioning