GitLab

* refactor dataloader

* cleanup + add docs

* change arg

* renamed Collator and added testing

* parametrized test for Collator

* appease pre-commit

* added edge case batch 0 (no batching)

* fix typos

---------
Co-authored-by: Hailey Schoelkopf <65563625+haileyschoelkopf@users.noreply.github.com>

When the continuation list contains a single entry,
make_disjoint_window incorrectly truncates the context list to be
empty.

The fix checks for the non-overlapping case and, in that case, simply
returns the existing lists.