Added support for automatic search fn generation.
Searching also functions correctly now (e.g. searchs limited to "page" or "per_page")
Added support for delete sub endpoints.
Finished out all existing case endpoints.
Added support for endpoints with underscores (spaces).
Added Custom Fields endpoint.
Added support for Filter endpoint.
Finished Customer endpoint.
Reworked to use Desk naming conventions (e.g. endpoints/eps instead of functions/fns).
Support for the remaining endpoints (mostly untested).