37.0 rc2

Updates in 37.0

• Now uses a portable version of swiftDialog that is installed in the Working Directory (by default, /Library/Management/erase-install). This prevents incompatibility with any preexisting version of swiftDialog, and also allows the version that is downloaded to be removed when using the --cleanup-after-use flag. Note that a portable release is not available for v2.2.1 of swiftDialog, which is required for computers running macOS Big Sur, so if the package is installed on a Big Sur Mac, the pkg installer is used so any existing version of swiftDialog will be overwritten, as before.
• Added a check to see if startosinstall authorisation failed, which will cause the script to quit rather than wait until it times out (thanks @pcrandom).
• Obfuscates the credentials from the output when using --very-insecure-mode (thanks @pcrandom).