* added configuration for tox-conda

* run tests with tox-conda

* data file locations and test skips

* make tests run in workflow

* add pytest-cov

* removed codestyle env typo

* added codestyle to envlist

* tox-conda version for codestyle

* added python version to codestyle workflow

* codestyle on 3.10 specifically

* flake8 fixes

* do not install everything for codestyle

* added temp fix for flaky sklearn install

* modified installation and testing instructions

* update action versions

* remove inapplicable parts of astropy cookie cutter, mention conda env in INSTALL.rst

* add make to conda deps