Migrate to GHA

[jGaboardi]

This PR addresses #64 (among other housekeeping stuff).

• updates setup.py for pytest and Python 3.8
• adds a custom codecov.yml that only comments after 18 builds
• updates the requirements files
• removes travis/appveyor yamls
• updates MANIFEST
• removes unused README.rst
• removes readthedocs.yml

In order for this to work properly the CODECOV_TOKEN will have to be set in Setting/Secrets from codecov.io.

[jGaboardi]

@sjsrey IIRC this should be merged before the GHA kick in. Also, TravisCI should be disable now that mapclassify is on GHA.

[sjsrey]

This PR addresses #64 (among other housekeeping stuff).

* updates `setup.py` for `pytest` and Python 3.8

* adds a custom `codecov.yml` that only comments after 18 builds

* updates the requirements files

In order for this to work properly the CODECOV_TOKEN will have to be set in Setting/Secrets from codecov.io.

Are there directions on how to do that?

[jGaboardi]

This PR addresses #64 (among other housekeeping stuff).

* updates `setup.py` for `pytest` and Python 3.8

* adds a custom `codecov.yml` that only comments after 18 builds

* updates the requirements files

In order for this to work properly the CODECOV_TOKEN will have to be set in Setting/Secrets from codecov.io.

Are there directions on how to do that?

I would do this but I don't have admin rights to mapclassify.

1. Copy the token from Repository Upload Token at codecov.io.
2. Go to the Settings tab on the far top right of the repo (Code, Issue, ..., Settings).
3. Go to Secrets near the bottom of the first box on the left panel.
4. Click New Secret at the top of the Secrets page.
5. Enter CODECOV_TOKEN as the name and paste in the token from (1) as the value.

[sjsrey]

thanks for this!

[sjsrey]

Fantastic job @jGaboardi