[yt-dev] Issue #1265: Helper functions for profiles need narrative docs (yt_analysis/yt)

New issue 1265: Helper functions for profiles need narrative docs https://bitbucket.org/yt_analysis/yt/issues/1265/helper-functions-for-profil...

Kacper Kowalik:

as per [comment](https://bitbucket.org/yt_analysis/yt/pull-requests/2332/implement-helper-fun...)

Responsible: MatthewTurk