- Make builtin classes available via `require` to allow view code to
request external and internal classes in a consistent manner without
having to know which classes are builtin and which not
- Make base classes request any used class explicitely instead of
relying on implicitly set up L.{dom,view,Poll,Request,Class} aliases
- Consistently convert class names to lower case in JSdoc to match
the names used in `require` statements
- Deprecate L.{dom,view,Poll,Request,Class} aliases
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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