use dynamic versioning (#342)

* use dynamic versioning

* remove python-2 imports

* replace mentions of flit with poetry

* test py311 py312

* allow py312

* fix solving for scipy

* fix solving for scipy

* fix solving for scipy

* fix solving for scipy

* use poetry natively?

* special numpy for py312

* update pandas, remove zieb cli

bump minor version

since we are dropping support for python 2.7

bump minor version

Merge pull request #221 from dswah/filter-warnings

Filter warnings

bump patch number

Merge pull request #195 from badge/docs

Added Sphinx-based documentation, updated requirements.txt

Merge pull request #202 from dswah/no-auto

No auto

Merge pull request #199 from dswah/easy-plural

term are easier to broadcast

Merge pull request #184 from dswah/gen_x_grid

move generate_X_grid to gam method

Merge pull request #179 from dswah/poisson-bug

Poisson bug