Refactor: Make observers control the lifecycle of capture and playba…

…ck (#39)

* refactor around an event-based API

* remove random git file oops

* fmt?

* more fmt

* make PlaybackWindow field pub

* insist that serializer systems only run if a capture path is provided

* allow users to select the source of input data when initiating playback events

* make deserialize_timestamped_inputs panic-free

* ensure all playback systems happen after frame_counter

* fix tests

* cargo clippy

* Refactor to use observers in capture and fix/test EndInputCapture behavior

* tmp

* tell event registry to always update test events

* fix update -> flush_commands

* remove log lines

* put the old name back for a var

* clippy

* fmt

* Improve docs, fix data samples, fix examples, use PlaybackWindow to control playback

* add releases note

RELEASES.md

@@ -4,6 +4,7 @@
 
 - migrated to Bevy 0.14
 - replaced `FrameCount` with its Bevy counterpart and updated system scheduling constraints to match the new `FrameCount`'s behavior, which updates in `Last` rather than `First`
+- refactored so that playback and capture are now initiated via Observers
 
 ## Version 0.5
 

data/app_exit.ron

@@ -1,7 +1,7 @@
 (
     events: [
         (
-            frame: (71),
+            frame: 71,
             time_since_startup: (
                 secs: 1,
                 nanos: 592977800,