Merge 3.4

The current documentation only mentions heap[0] as the smallest element in the
beginning, and not in any of the methods' docs. There's no method to access the
minimal element without popping it, and the documentation of nsmallest is
confusing because it may suggest that min() is the way to go for n==1.

The current documentation only mentions heap[0] as the smallest element in the
beginning, and not in any of the methods' docs. There's no method to access the
minimal element without popping it, and the documentation of nsmallest is
confusing because it may suggest that min() is the way to go for n==1.

Patch by Håkan Lövdahl.

Patch by Håkan Lövdahl.

Thanks to Paul Moore for the PEP and implementation.

subprocess doesn't support pass_fds on Windows.

Patch by Demian Brecht.

handle exceptions raised by an iterator.  Patch by Alon Diamant and Davin
Potts.

Patch by Lars Buitinck.

Patch by Mike Short.

Fixed 2 to 3 porting bug in pynche.ColorDB.

Patch by Mark Lawrence.

Patch by Demian Brecht.

handle exceptions raised by an iterator.  Patch by Alon Diamant and Davin
Potts.

Patch by Lars Buitinck.

Patch by Mike Short.

Fixed 2 to 3 porting bug in pynche.ColorDB.
Added few tests for __truediv__, __floordiv__ and __matmul__.

Noticed by Nathan West.

Patch by Håkan Lövdahl.

Patch by Mark Lawrence.

block in pyatomic.h