To-do list

Refactor PersistentVector so that the LEAF node only contains integer vectors (one for the finishIdx, which we already have, and one for the startIdx)
Add tests for indent, dedent and remove-line-break motions
- Add tests that searchList updates as expected too
Add tests for other yank motoins
- Tests should be based on existing tests for delete-motions, and in the same order.
Bind gamepad functions from GLFW and/or RGFW
Add tests for NormalYankDelete functions, to make sure that they are yanking the expected string.