Merge branch 'master' of https://github.com/highfidelity/hifi
Provide a means of visualizing the joint constraints.
Merge branch 'master' of https://github.com/highfidelity/hifi
Tweaked Hydra "IK" to propagate delta rotations up the hierarchy while
preserving joint constraints.
Need to transfer parent rotation to child.
Experimenting with tweaking the Euler angles so that z, rather than y, is in
[-pi/2, pi/2].
Merge branch 'master' of https://github.com/highfidelity/hifi
Working on integrating rotation into IK.
More work on IK.
Revert to using weight that doesn't depend on number of free joints.
Got that backwards.
Provide option to align wrists with forearms.
Don't constrain elbow when rotating forearm with wrist.
Merge branch 'master' of https://github.com/highfidelity/hifi
Remove unused propagate option for applyRotationDelta.
One more unused variable.
Merge branch 'master' of https://github.com/highfidelity/hifi
Merge pull request #2720 from ey6es/master

Added option to render joint constraints, changed safeEulerAngles so that z (rather than y) is in [-pi/2, pi/2], added ability to set end effector rotation in IK, added option to avoid aligning forearms with wrists.
Merge branch 'master' of https://github.com/highfidelity/hifi into deltatars
More work on avatar streaming.