Socialismus 1.3.9-RELEASE

What changed:

• Support for 1.21.1 and some future versions

If you find any bugs or would like to see new features, you can do so on the plugins github page in the issues category.

I'm currently working on the 2.0 version of Socialismus, which will bring modularity and Velocity platform, you can follow the progress here, so don't wonder if the updates are not coming out :)
There is already a first release candidate with new features and structure, if you want to help with testing feel free to use it.