Merge remote-tracking branch 'upstream/master' into sections
Section Core
Section STL
Fix tests
Golf tests
Remove or rename ambiguous operators
Test sections
A little more golfing
Remove right-sectioned minus
Scope first
Section Equalities
Audit postfix func
Section [<|>]=
Fix tests
prefix >; postfix >
Don't convert NSString to String using format:

The make(a: NSObject) method attempts to convert its NSString value to
a String value by passing it to String(format:) and never provides any
arguments. Therefore it fails to decode any string that contains a
% character. This changes it to call to String(_).
Merge pull request #139 from mgp/master

Don't convert NSString to String using format:
Merge pull request #132 from CodaFi/sections

Operator Sections
Merge upstream/master