V3 compatible, Recalc improved, progress bars fixed

[mortii]

• Now works on the V3 scheduler (fixes #276)
• Exponentially faster recalc action
• Progress dialogs are now shown when recalcing and anki no longer freezes (background thread is used instead of main thread)
• Renamed some files that were poorly named
• Refactored init file and extracted hidden hooks to make the code execution logic much clearer
• Added some type hints for clearer logic
• refactored some variable names to follow PEP conventions

[mortii]

I fixed the lint errors and I rebased onto qt6-migration

[mortii]

hold on, a very a sneaky error appeared that needs to be fixed

[mortii]

there was an invisible input parameter after removing a lambda, but it's fixed now.

[mortii]

Also this should probably be placed in the ankiweb description until we get a proper wiki/guide (next on my todo-lis):

NB! If the deck you are studying has sub-decks then new cards will by default only be gathered from the first sub-deck until it is empty before looking for new cards in the next sub-deck. If you instead want to get new i+1 cards from all sub-decks do the following:

1. Activate the v3 scheduler: Tools -> Review -> Scheduler -> V3 scheduler
2. Deck that has sub-decks: Deck options -> Display Order -> New card gather order -> Ascending position

The writing is kinda clunky, feel free to improve it in whatever way you see fit , lol.

[landonepps]

Looks good to me, thanks for all the work you did here. And I appreciate the AnkiWeb note, I'll be sure to add it.

[PrentissLiu]

Thank you so much for your work. I am the version of QT5. I tried to modify: readability_ui.py and readability_settings_ui.py :

from PyQt6 import QtCore, QtGui, QtWidgets

to:

from PyQt5 import QtCore, QtGui, QtWidgets

it works!

[landonepps]

Awesome, I really appreciate the report! Both of my computers are arm-based Macs, which don't support Qt5, making it quite annoying to test.

If this is really all that's needed, I should be able to modify the UI generation code to replace these imports with the aqt version and have full backwards compatibility.