Added a single function that fits pose, shape and blendshapes
Added a single function that fits pose, shape and blendshapes

It fits pose and shape, uses front-facing contour as well as occluding contour fitting. It can iterate (alternate) the pose and shape fitting.
A simpler overload exists with less parameters and reasonable defaults.

patrikhuber/eos,icyrizard/eos,patrikhuber/eos,icyrizard/eos,icyrizard/eos,patrikhuber/eos