* relax versions, add python 3.7 to CI
* add workflows
* try paramaterized circleci build, disable slow test
* fix workflow
* fix (?) pyversion
* set job name, fix pip freeze output
* test_requirements.txt
* fix install
* fix paths (again) - should use pushd popd instead
* use pushd and popd
* sort deps, restore unit test, cleanup CI
* relax versions more
* clean up versions in docs
* test older libs for 3.6, newer for 3.7
* pip: progress bar off
* fix gym-unity pip install
* try cat'ing setups for checksum
* dont use fallback (temporarily)
* dont turn off progress bar before upgrading pip
* PR feedback
* add parameter descriptions in CI config