Bevy 0.14 version

[ChristopherBiscardi]

Bevy 0.14 is out. The 0.14 updates to the codebase are in the 0.14 branch (2048 diff from 0.13)

Notable changes

• Observers for new tile events
  • We never insert multiple tiles, so we don't need batching, etc for events. Therefore Observers are a better fit.
• Move away from Startup in favor of OnEnter(State)
  • OnEnter now runs before Startup, making Startup kind of in an awkward API point
  • https://bevyengine.org/learn/migration-guides/0-13-to-0-14/#onenter-state-schedules-now-run-before-startup-schedules
• Introduce ScalingMode
  • This allows defining some space for the UI and introduces the idea that a camera has a transform
• Use a new font.
  • There is a default font, but most people will want to change that, so use one.
• button tinting has changed

Known Issues in 0.14

• Padding is kind of buggy: Padding in Style no longer works in 0.14 bevyengine/bevy#14143

[ChristopherBiscardi]

scripting is in-progress