Version 3.3.7

Changes:

• Now DATA.TEST.ARGMAX_TO_OUTPUT defaults to True
• Add multi-head in instance segmentation workflow to identify the class of each instance

Fixes:

• Change rotate to scipy so it can be used with 3D images
• Change TTA to allow multiple heads as output of the network
• Fix minor error in BMZ export
• Fix edge case when using DATA.REFLECT_TO_COMPLETE_SHAPE
• Reduce memory comsuption in merge functions

Full Changelog: v3.3.6...v3.3.7