Update copyright notes for 2021
Refer to license as "Revised BSD" to clarify that it is not customized
The common name "Modified BSD License" for the 3-clause BSD license can
be misleading as it might suggest it is a BSD license customized by the
To avoid this, refer to the license under one of its other names
Move signal modules from blueprint packages into new package `byceps.signals`
Rename user badge service
Extract awarding-relating user badge service
Mark required API request fields accordingly
Revert "Use `Maybe` return type for user avatars, user badges"
This reverts commit e85d7e28b041219bc33b19743d04de458839b2ee.
Use `Maybe` return type for user avatars, user badges
Move API into version 1 sub-package and URL sub-path