Pomdp-py

[Changelog](https://github.com/h2r/pomdp-py/blob/master/CHANGELOG.rst#version-134-01262024). Modernize repo and improving dependency management without introducing new features.

Refer to [Change log](https://github.com/h2r/pomdp-py/blob/master/CHANGELOG.rst#version-133-07252023) for the list of changes, including

* Fixed installation failure due to new Cython 3.0.0 release
* Bumped minimum Python requirement from 3.7 to 3.8.

Minor fix in [histogram](https://h2r.github.io/pomdp-py/html/api/pomdp_py.representations.distribution.html#module-pomdp_py.representations.distribution.histogram) to avoid print confusion.

Improvements to documentation, in particular the [tiger tutorial](https://h2r.github.io/pomdp-py/html/examples.tiger.html).

See [change log](https://h2r.github.io/pomdp-py/html/changelog.html#version-1-3-2-04-03-2021) for details.

Bug fixes & Added template classes for [tabular models](https://h2r.github.io/pomdp-py/html/api/pomdp_py.utils.html#pomdp_py.utils.templates.TabularTransitionModel). See an example [in this Github Gist](https://gist.github.com/zkytony/51d43ee6818375434eb3b84a77a47a5c) for defining and solving the CryingBaby domain using tabular models, a small POMDP.

Checkout recent changes in [changelog](https://h2r.github.io/pomdp-py/html/changelog.html#version-1-3-1-11-03-2021)