Refactor to use --restart argument of softwareupdate, plus Catalina updates.

Updates

• Leverage --restart argument of softwareupdate for 10.13.4 and above machines
• Removed optional --no-scan option, it is now by default (this eliminates the support for OS X 10.10 and below)
• Refactored softwareupdate output parsing to add functionality for Catalina and updates with spaces in their names
• Switched loop method of installing updates that do not require a restart
• Rather than calling finish function for exit, I now trap the EXIT code and run finish function with that
• Includes ability to customize Yo action/other buttons - added by peterlewis

Deprecated Features

• Removed notification that displays when updates that require a restart are installing, and somebody logs into the Mac during the process. In modern macOS versions, this install time is minimal while the Mac is in use, as the updates are truly installed after the restart in preboot process.

1.0.3

Updates

• Many variables can be changed in the main preference file now after .pkg installation (see Customizing)
• Add removal of artifact plists upon building (in case of identifier change)
• Add T2 Mac shutdown option (BrideOS updates)

Edited release on 6/18/2019 at 3:37PM CST to include updated README and renamed updates_blocked key to UpdatesBlocked for consistency

1.0.2

Fixed - Correct target script path in postinstall

1.0.1

No new functionality, but includes install_latest_yo.sh to ease installation of yo.app (thanks to kurtroberts).

1.0

First release build.