disable animator, when clip playing

A bug was found when using this package with an animation track.
Animator component disturb waypoint system.
So, disable animator when clip playing.
This change is always active, if you don't need this, you can disable this by isStopAnimator field of WaypintTimelineClip.

fix bezier tangent calculation bug

v1.0.3

fix bezier tangent calculation bug

Fix bezier calculation

v1.0.2

Merge branch 'master' of github.com:k-okawa/WaypointSystemForTimeline

FirstRelease

v1.0.0

Merge branch 'master' of github.com:k-okawa/WaypointSystemForTimeline