SgEntity:   Fixed an issue with sync() where it would add field to the background   pull engine when the Entity does not exist in Shotgun.
SgEntity:
  Fixed an issue with sync() where it would add field to the background
  pull engine when the Entity does not exist in Shotgun.

  Entity objects can now commit.

  Added internal function for persistent locking of an Entity.

ndunsworth/python-shotgunorm