installation: moved from `setup.py` to `pyproject.toml`: - following backend change, installation is now using `pyproject.toml`, and legacy `setup.py` as well as other legacy files have been deleted/updated. - [hatch](https://hatch.pypa.io) is now used as main building tool. However, thanks to the use of standards, other tools can be used too. - `VERSION` file has been deleted, in favor or using directly `__version__`, in `libervia/web/__init__.py`. Version can be updated directly from Hatch - update .hgignore - several dependencies version bump, with code update to adapt to changes.

--- a/.hgignore	Wed Jun 07 09:35:36 2023 +0200
+++ b/.hgignore	Wed Jun 07 15:28:10 2023 +0200
@@ -1,18 +1,27 @@
 syntax: glob
+.build
+build
+ctags_links/
+dist/
+.eggs/
+env/
+MANIFEST
+.mypy_cache/
+*.orig
 *.pyc
+*.pyo
+.pytest_cache
 *.pyv
+Session.vim
+stubs/
+*.swo
 *.swp
-*.swo
-*.js
 tags
+tests/e2e/report*
+_trial_temp/
 twistd.log
 twistd.pid
-sat.egg-info
+twisted/plugins/dropin.cache
 *.un~
-dist
-MANIFEST
-*.sh
-build/
-Session.vim
-ctags_links/
-html/
+.vim
+.vscode