Fading in/out

Our animations support properties called endTick and beginTick.
To add these properties to Blockbench animations, check out the extra data section of the Blockbench wiki page.
All of these properties are in ticks. (Each second being 20 ticks)
They allow you to fade in and out of the default pose.
beginTick is the time it takes to fade in from the default pose to the animation.
The animation_length in Blockbench anims or stopTick in Blender ones is when the animation will fully end.
endTick is when the animation starts fading to the default pose, and by the end of the animation the default pose will be reached.
beginTick fades into the first keyframe and endTick fades from the last keyframe, so if you have a keyframe at tick 0 and at the final tick no fading will be done. endTick uses the easing of the last keyframe, but beginTick defaults to in out sine. (If it gets requested I might add custom beginTick easings)

important

Blockbench automatically generates a keyframe at second 0 which will cause beginTick not to work!
You must remove it manually.