more strict method handling in the api

The api now handles methods by using a chain of if-else statements that have 1-2 lines of code in them, usually to call a more complex function to handle the request.

This strictness is introduced to minimize errors from not correctly returning. Previously, one needed to call 'return' after each call to a different method handler, an action which is not fully intuitive and on multiple occasions was forgotten, resulting in bugs in production code.

This new paradigm is both more visually pleasing and hopefully less prone to errors. This style of control-flow handling should mostly be restricted to the api.