Remove all quick functions

[ajrominger]

a few things to note here:

• the quick* functions are not used in any active code, though some people still might have them in old scripts they use for troubleshooting, so be aware that these functions are gone!
• we want them gone because they clutter up the namespace and the user is not expected to use them
• i made a bunch of other housekeeping changes too that should be retained:
  • returned the definitions of the show methods
  • removed the un-used function repS4
• i also commented-out the one line that calls python code, so now folks can continue testing without worrying about python breaking things

[diazrenata]

LGTM - no new errors! Happy to merge now or use it to kick things off Monday. :tada: