Fix ignores/overrides with upper case names.

This release fixes #45 "Packages with capital names do not get ignored when checked out".

Migrate from pkg_resources to importlib_resources

• Fix #42: deprecated use of pkg_resoures to load entry points and parse requirements.
  This enables mxdev to work on Python 3.12, where pkg_resources is no longer installed by default in virtual_envs.

Minor git revision fix

Changes

4.0.1 (2024-03-01)

• Fix specifying out a revision (#40)
  [pbauer]

Alternative package installer support

• Breaking: Remove --pre on sources from generated requirements-mxdev.txt.
  Usually it is not needed any longer, at least with pip 23.x.
  This is a breaking change if you rely on the --pre option being present in the generated file.
  Now the --pre option should be added to pip install when the generated file is used.
  This change enables the use of the generated file with the alternative pip replacement uv.
  [jensens]

• Breaking: Drop official support for Python 3.7 (it is end of life).
  [jensens]

• Document mx.ini sections vcs setting.
  [jensens]

New feature config includes

• Provide directory default setting [@rnixx]
• Feature: Include other INI config files [@jensens]