Merge branch 'hotfix/1.2.1'
Merge branch 'release/1.3.0'
Max threads used for the smart threading system will now be the # of cores in your CPU instead of (the # of cores + 2)
Fixed a bug where the "--clean" command-line parameter wasn't working correctly; hatch will now use the # of cores in your CPU as its maximum thread count; hatch will now display an error message if it could not delete a file during the cleaning process
Merge branch 'hotfix/1.3.1' into develop