[ANNOUNCEMENT] Regarding Engines

[EliteMasterEric]

After some discussion with @ninjamuffin99, we've concluded that limiting the engine list by some abstract measure of "notability" only limits discoverability of unique new projects. There's no reasons like Codename should be excluded when

As a result, our policy will be:

• The list will be open to contributions, with a bit of proofreading/editing done for cleanup.

• If you feel a given project should be on the list, make a contribution. Be sure to include specifics on why an individual would want to use it over other offerings.

• If you feel a given project that is on the list should NOT be there, feel free to make a new issue to discuss.

• EDIT (March 30): Notable projects which are deprecated are still notable, as long as they are open source. However, if they are unmaintained, any direct links to them should be moved to the ARCHIVED.md page.

[EliteMasterEric]

Just realized I forgot to update the rule regarding deprecated projects.