Bugfixes -- frame timout

Two fixes related to frame timeout processing:

• Allow disabling frame timeout in simulation by setting None (null in .yaml) as the max_frame_time config value. This fixes #15.
• Fix erroneous duplication of frame timeout value for all frames. Timeout is only prolonged for the first frame -- initialization requires more time than the following frames. Sim property files are updated to reproduce earlier behavior with erroneous timeout duplication

PyGarment 2.0.0

Major release -- implementation of GarmentCodeData in pygarment v2.0.0, new GUI, and other updates and improvements. Basic JSON representation classes are now part of PyGarment library! See CHANGELOG for more details

First release

First release of PyGarment 🥳