Sync — 1.7.2

• Improved Sync so it checks for changes before saving the context
• Reduced memory footprint in big sync processes dramatically!
• Updated dependencies:
  • DATAStack from 5.0.0 to 5.2.1
  • NSEntityDescription-SYNCPrimaryKey from 1.1.0 to 1.1.1
  • NSManagedObject-HYPPropertyMapper from 3.6.4 to 3.6.5