switch_map() operator not listed in documentation

[paulkorir]

Hi,
Thanks for this useful library.
I'm trying to go through a tutorial which lists the switch_map() operator. I can see this operator in the code (as the alias of compose(map(project), switch_latest()) - line 3365 of reactivex.operators.__init__ but it doesn't show up in the docs.
I expected it because reactivex.io lists it as a standard operation and it is not clear how the alternative (switch_latest()) works as a sub.
Please consider making this change to the docs and API.
Regards,
Paul