v0.2.1

0.2.1

• Fix: correct results when installed with pipx or uv tool. These tools put pyfirstaid in
  its own private environment, so it used to diagnose that environment and report false
  problems (e.g. "pip installs into a DIFFERENT Python"). It now checks the Python you get
  when you type python3, and says so in a short note.
• New --python PATH option to check any interpreter, e.g. --python python3.12 or
  --python .venv/bin/python. The target doesn't need pyfirstaid installed.
• Files in the current folder (e.g. random.py) can no longer break pyfirstaid itself.
• Clearer message when no compiled packages are installed.