New features

New features:
Isolate clean from main and recreate venv when pip is missing or dockerfile changes #95
Refactor devcontainer rules in Makefile #93
Add venv rule to the main rule #91
Add untracked files and remove deleted ones from "git ls-files" output #89
Install dependencies and editable package in the same command #87
Replace post-release with no-guess-dev in setuptools-scm config #85
Refactor contraints.txt usage #81
Remove unnecessary requirements-*.txt #79
Use git ls-files to track depencies in Makefiles #77
Add Makefile as dependency of clean rule #75