Description

This PR contains several bug fixes and improvements, mostly related to the PhasorPy class and its cursor methods:

• Fix handling limits and ticks in PhasorPlot.__init__.
• Add option to pass labels to many PhasorPlot methods, including cursor and semicircle.
• Add PhasorPlot.legend method.
• Improve PhasorPlot.cursor and polar_cursor methods:
  • Support drawing multiple cursors of same style.
  • Draw in major grid style.
  • Add option to control drawing circles or crosshair limited by circle.
  • Add option to control drawing polar or Cartesian style cursors.
  • Change cursor method to draw Cartesian style cursors by default.
  • Allow ls and lw parameters instead of linestyle or linewidth.
  • Remove align_semicircle parameter from cursor methods and also mask functions. Instead, add option to pass 'phase' or 'semicircle' literals to angle parameters.
• Update tests, docstrings, and tutorials accordingly.
• More consistently use lists for array-like parameters.
• Add favicon.

Checklist

• The pull request title and description are concise.
• Related issues are linked in the description.
• New dependencies are explained.
• The source code and documentation can be distributed under the MIT license.
• The source code adheres to code standards.
• New classes, functions, and features are thoroughly tested.
• New, user-facing classes, functions, and features are documented.
• New features are covered in tutorials.
• No files other than source code, documentation, and project settings are added to the repository.