These days, Gitpod supports VSCode workspaces instead of only Theia.
Theia understands settings under `.vscode` as well as under `.theia`, but VSCode only understands settings under `.vscode`. Thus, it seems reasonable to move settings to that new location and then provide a good UX on both local VSCode and Gitpod's.
I also install new tools such as commitizen.
The goal is that just clicking on Gitpod badge, you have a full dev environment ready to hack.
The new `[tool.poe.tasks]` section and new poetry based workflow are a complete
replacement for the makefile which has also been removed. #129
Also:
- add devtasks for python functions to be referenced as poe tasks
- update CONTRIBUTING.MD #154 to keep things coherent
- remove reference to tox
- update ci to work with more expressive toml syntax (upgrade pip)
- and use poe tasks in ci
