v2.0.0-beta-1

This is the first testing release of the 2.0 extendium rewrite.
If you don't know what you are doing don't use this version as it can break things.
See the discord channel for general instructions for this new version.

See the new updating compatibility list here https://docs.google.com/spreadsheets/d/e/2PACX-1vSGe55SdLrz9vILg6jPDvlOrkpeOgInPxor96t5MreHPkXNhft4XSwetj70aYhNjCocnfLxpk29Nkkf/pubhtml