v3.0.0 - Router rewrite... again!

[splashsky]

Aloha! With some inspiration from FOMO and other projects, I wanted to look into some improvements to the router. Simplicity, after all, is a hallmark for good engineering!

That being said, this is a completely breaking change to the router. The function names themselves and it's use is mostly the same, but I completely got rid of the static functionality in favor of a traditional class.

• The class is no longer static - needs to be initiated (the constructor now takes the basePath) and that instance used
• Added the missing HTTP verbs (PUT, PATCH, DELETE)
• Removed adding a path with multiple verbs at once, may reintroduce in the future
• Removed "method not allowed" endpoint, as a mismatched route and method is still more or less a 404 by definition
• Greatly simplified the internal structure of the router, such that even adding support for the 3 new verbs we've reduced LOC by about 70 lines

Just waiting to perform some real world-testing to see if there are other improvements to be made.