Mega-early dev 1

This is the first development preview build of Prism v4. Obviously, do not use this in production.

This preview includes:

• new MySQL schema (use a new DB, although updating from v3 should work)
• lookup commands with argument support (mostly similar to v3, although b is now m etc)
• rollback and restore commands
• a robust configuration and localization system. "ignores" have been replaced by the new filter system.
• basic wand functionality
• bugs

What's next:

• db schema refinements, profiling, and index work. (literally have not touched indices yet)
• purges, permissions, and previews
• chat data pagination
• lots of small pieces and refinements

Docs: https://prism.readthedocs.io/en/latest/ (we've been granted the prism subdomain so docs will move there soon)