Features

Mixer Transitions now have a Speed field for the whole mixer as well as the individual animations.
Mixers now show dropdown menus as the headdings of each column instead of using context menus so that the available functions are much more obvious.

Improvements

Added AnimancerPlayable.StateDictionary.ReferenceKeysOnly so that the dictionary comparer can be set to use ReferenceEquals for better efficiency if you aren't using value types.
The Inspector now locks event times for looping animations into the 0-1 normalized time range since values outside that range are not supported.
Added LinearMixerState.SortByThresholds.
LinearMixerTransition now displays an error in the Inspector if the thresholds are out of order and you can click it to sort them.
EventSequenceDrawer now overrides CanCacheInspectorGUI to return false so that it can draw the TimeRuler properly when no custom editor is present.
- Removed DummyObjectEditor since it is now unnecessary.
MixerState.AppendDetails now includes the child synchronization flags.
MixerState<TParameter>.AppendDetails now includes the thresholds.
Improved various assertions:
- AnimancerNode.Weight does not allow Negative, Infinity, or NaN.
- AnimancerNode.Speed and AnimancerState.Time do not allow Infinity, or NaN.
- Added similar assertions to MixerState.ApplySynchroniseChildren.
- Added various assertions to verify the correct initialization of the Playables.

Fixed Animation Events to work properly on Generic Rigs.
Changed the default AnimancerNode.Index to int.MinValue because PlayableGraph.Connect with an index of -1 causes it to allocate and connect to a new port instead of throwing an exception. #33
Fixed MixerState.Speed to work properly when using synchronization. #34
LinearMixerState now defers its call to AssertThresholdsSorted so that you can actually set thresholds individually without immediately triggering the assertion.
Reordering a Mixer Transition in the Inspector will now properly reorder their sync flags as well.
Fixed MixerState.ApplySynchroniseChildren to properly handle child states with 0 length (generally nested mixers that have all their children at 0 weight).