3.7.0 - Support for vectrex extras

Sorry, nothing majorly exciting here, but a major refactor of a lot of the code under the hood. send all the thanks (and donations if he has something set up?) to @hallem for doing literally all of the heavy lifting here

What's Changed

• A Bunch of Stuff by @hallem in #264

Full Changelog: 3.6.0...3.7.0