The "betse.util.type.cls.classes" submodule now defines the following
new getter functions:

* get_name_qualified(), obtaining the fully-qualified name of the passed
  class. The implementation proved highly non-trivial, due to common
  edge cases (e.g., classes with no or poorly defined modules).
* get_module_name_qualified_or_none(), obtaining the fully-qualified
  name of the module defining the passed class if any or "None".

Unrelatedly, the prior "betse.util.py.pymodule" submodule has now
been split into two new "betse.util.py.module.pymodule" and
"betse.util.py.module.pymodname" submodules for maintainability.

Unrelatedly, all copyright notices have now been updated to reflect the
rapidly oncoming New Year.

(Insouciant sauciness emits a pliant draughtiness!)