Update 1.8.4.1 - Add support for 1.19.3

This is a smaller update that adds support for 1.19.3 and fixes a few bugs that were reported!

Bugs have been fixed!
These all come from the bugs and features you all have requested on the shopbugs page so keep the bug reports and feature requests coming! Here are the specific ones that this update covered:

https://github.com/snowgears/shopbugs/issues/358
https://github.com/snowgears/shopbugs/issues/359
https://github.com/snowgears/shopbugs/issues/363
https://github.com/snowgears/shopbugs/issues/364
https://github.com/snowgears/shopbugs/issues/366
https://github.com/snowgears/shopbugs/issues/368
https://github.com/snowgears/shopbugs/issues/370
https://github.com/snowgears/shopbugs/issues/371