Bibliopixel

* New color palette class
* Simplify entering channel order in Projects
* Fix intermittent timer issue

* Fix 991

* Include main/commands.rst.tmpl (fix 988)

* Fixes for classic "no project" BP
* Get rid of deprecation warnings from new version of pytest

* Support Python 3.7

* New `bp-pid` command

* New `curses` and `text` drivers display LED colors in a terminal

* New `release_test` integration test suite with hardware tests

* Switch to using YAML as default data storage

* Fix or implement 663, 720, 725, 786, 787, 788, 792, 793,
795, 796, 802, 813, 819, 827, 836, 861, 863, 863, 870, 872,
874, 876, 878, 885, 892, 898, 910, 925, 927, 929 and 938

* Much more...

* Remove test that crashes ArtNet receiver
* Test project for ArtNet