cleaned up reading of model_animation_info (with helpers from io.hpp)
cleaned up reading of model_animation_info (with helpers from io.hpp)

cmbasnett/mandala,cmbasnett/mandala,cmbasnett/mandala,cmbasnett/mandala,cmbasnett/mandala,cmbasnett/mandala,cmbasnett/mandala,cmbasnett/mandala