Merge branch '5.1'

Authored by brauch on Jan 6 2017, 9:41 PM.

Description

Merge branch '5.1'

Merged Changes

CommitAuthorDetailsCommitted
275775c150a9flherne
Don't visit child nodes of JoinedStringAst (py3.6 fstrings) 
Jan 4 2017
5e60808c464cflherne
Avoid crash with negative argument indices in hints. 
Jan 2 2017
de625981a1a0flherne
Builtin documentation: correct frozenset 
Jan 2 2017