v1.5.0b

This release focuses on making it easy to install Crystal from PyPI,
adds support for running on Linux from source (but not from a binary),
and fixes many bugs with the built-in CLI shell.

Additionally items in the main window are easier to understand
because icons and tooltips have been added for all tree nodes.

• Distribution improvements

  • Can install Crystal using pipx and pip, from PyPI:
    • pipx install crystal-web
    • crystal
  • Can run Crystal using crystal binary:
    • poetry run crystal
  • Can run Crystal using python -m crystal:
    • poetry run python -m crystal
  • Add support for Linux platform (Ubuntu 22.04, Fedora 37)

• CLI improvements

  • Fixed shell to not hang if exited before UI exited, under certain circumstances.
  • Fixed {help, exit, quit} functions to be available when Crystal runs as an .app or .exe.
  • Altered exiting message while windows open to be more accurate.
  • Pinned the public API of Project and MainWindow.

• Testing improvements

  • Tests are much faster now that download delays are minimized while running tests.
  • Failure messages are improved whenever a WaitTimedOut.
  • A screenshot is taken whenever a test fails.
  • Several race conditions related to accessing the foreground thread are fixed.

• UI Improvements

  • Icons and tooltips added to all tree nodes in the main window,
    clarifying the different types of entities, links, and tasks that exist.
    • Easy to distinguish between URLs and groups.
    • Easy to see whether a URL was downloaded,
      and whether it was downloaded successfully.
  • URL clusters now show in their title how many members they contain.
  • Fixed "Offsite" cluster nodes to update children appropriately whenever
    the Default URL Prefix is changed.
  • Fixed right-click on non-URL node to no longer print a traceback.
  • Fixed attempt to download a group with no source to no longer print a traceback.