rename *ByPath commands to *AtPath

[ianstormtaylor]

Do you want to request a feature or report a bug?

Improvement.

What's the current behavior?

We started with the *ByKey commands, where "by" makes sense, and added the *ByPath commands later. Since they took the same arguments, it felt like it made sense to keep the same "by" preposition, instead of the more natural "at".

What's the expected behavior?

But with the removal of the key-based commands of #2858, and our existing use of "at" for range commands, it makes more sense to have *AtPath and *AtRange together. (And also *AtPoint in the future.)

[ianstormtaylor]

Fixed by #3093.