-Remove --time option for EmberAnimate, it was redundant with --frame.
-Make --enable_jpg_comments and --enable_png_comments just be bools that when present mean true, rather than having to specify =true.
-Add a new argument --ts for EmberAnimate to allow the user to specify the temporal samples value to use for the entire animation. Useful for testing.
--Bug fixes
-Properly seed rands in EmberAnimate when specifying --isaac_seed and using more than one device with --opencl.
--Code changes
--Small cleanup to flatten/unflatten all code.
--Make EmberOptionEntry<T>::operator() return a const reference instead of a copy.