Version 0.11

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Version 0.9

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Update to release v0.5

Merge pull request #43 from markkho/v0.4-release

v0.4 release

Merge pull request #24 from markkho/tabular_mdp_opt

Major overhaul of core and tabular methods:

- States/actions are assumed to be hashable (e.g., Gridworld now uses frozendict; no built-in hashing functions; dictionaries are the main way to create maps)
- The distribution classes have been streamlined (Multinomial has been removed and DictDistribution is the main way to represent categorical distributions; .sample() takes a random number generator)
- Policy classes have been simplified
- More thorough type hints

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