Bevy 0.13 update

[Chris Biscardi]

Code and workshop lessons should both be updated.

https://bevyengine.org/news/bevy-0-13/

Notably, this includes the automatic apply_deferred that will address #1 .

[Chris Biscardi]

bevy_easings is released on crates.io with 0.13 compatibility and is the only major dependency for this workshop.

[Chris Biscardi]

Base updates for 0.13 that result in a running program again:

• Input is now ButtonInput
  • bevyengine/bevy#10859
• alignment is now justify
  • bevyengine/bevy#10854
• KeyCode::Left is now KeyCode::ArrowLeft
  • likely due to winit upgrades around keycode handling: https://bevyengine.org/news/bevy-0-13/#winit-upgrade
• add_state is now init_state
  • bevyengine/bevy#11043
  • The requirement to have a Default implementation was also removed, so does it make more sense to use the new insert_state?

The program runs and all functionality seems to be working, however some of the issues seen in #1 seem much more easily triggerable in 0.13.

2048-with-tile-misplacement-and-crash-due-to-easings.mov

Changes were made in 447b621

[Chris Biscardi]

Added a new section on testing, especially around detecting game over (without having to play an entire game) -- 1687150

[Chris Biscardi]

added sprites now that 9-slice scaling is in bevy releases