Assign false information to frames while unlocked

[p3lim]

This will allow units to have false information while unlocked so that every frame is representable while moving.
This works fine when entering combat and locking, everything updates properly back without causing taints or errors.

[p3lim]

I'm still working on proper support for headers, although it's a bit tricky.
This is the reason behind oUF/#237.
What I tried was assigning a fixed startingIndex which would simulate 40 units, although I haven't nailed it down completely yet.