Hiya! This here is a bugfix release for 0.12.0 Spaghetti Sloth!
We fixed csv block/allowlist import/export in the settings panel, instance terms and conditions updating, and also a silly issue where you couldn't use the settings panel to update your profile if you didn't have custom CSS enabled on your instance (blame me, tobi, for all these shiny new frontend bugs).
For detailed release notes, instructions, and warnings, please follow the 0.12.0 release notes and just replace 0.12.0 with 0.12.1 throughout. Thanks! Enjoy!