GitLab

* ⬆ support py39, drop py36
* 📝 add release note

* 🔨 add scripts to check theano-pymc pins, to generate requirements-dev from conda, to sort conda deps

* 🔧 update conda envs and requirements-dev.txt

* 📝 fix typo

* 📝 add docstrings

* 📝 update pip-to-conda docstring

* noop

* 🔥 remove pin theano checks, just use requirements.txt

* local install in arviz compat

* 📝 switch -> checkout, note beginner friendly label

* 📝 link to beginner friendly issues

* run generate pip deps from conda on all conda env files

* 🔧 make sure all conda-envs files generate requirements-dev

* 🔀 reorder some tests

* 🎨 remove trailing comma

* Update scripts/generate_pip_deps_from_conda.py
Co-authored-by: Thomas Wiecki <thomas.wiecki@gmail.com>

* update contributing

* rename

* put watermark back in (minimal impact anyway)

* keep graphviz in

* failfast

* add failing test

* fail fast

* don't fail a test on purpose

* indent

* indent

* remove -x

* remove arviz with conda

* dont remove patsy

* try using python version correctly

* move non-theano non-optional dependencies out of environment-dev.yml

* keep python in environment-dev.yml, that's a separate issue

* typo

* put patsy back; final commit?

* make separate env files

* show python version

* update env name in contributing.md

* redistribute tests

* Split up requirements, update CONTRIBUTING.md

* Add nose parameterized for theano tests

* Pare down requirements even more

* WIP: Contributing guidelines not ready to merge

* Fleshed out contribution guidelines