API complete revamp

This update contains a lot of changes and breaking changes which improves the looks and feels of bevy_tween's API. Timing types had been renamed and moved to bevy_time_runner

See full changelog include breaking changes here

Support bevy_eventlistener

Event implements bevy_eventlistener by musjj. The implementation now exists inside bevy_time_runner

Integration with bevy_lookup_curve

Add interpolation using curve with bevy_lookup_curve. Example can be fount at examples/bevy_lookup_curve.rs

New feature

• Preset API for span tween.
  • Create reusable animations with custom parameters.
  • Or organize complex animations into bite-sized functions.

New features

• Tween events!
  You can now add custom events that will be fired at customizable time with optional custom data
  via TweenEvent and TweenEventData
• Configurable schedule
  This crate previously uses PostUpdate schedule by default for all APIs and plugins.
  It is now configurable via TweenAppResource within TweenCorePlugin.
• Jumping to an arbitary time
  You can jump to an arbitary time using the TweenTimer::set_tick() method.
• Skip tween
  If you want to skip a tween or tweener from functioning then insert SkipTween
  or SkipTweener component to your entity.
• Improves span tween builder
  It's now possible to use a builder with relative time, easing organizing via code.

There are some breaking changes to be aware of.
See changelog for more details.