-[RACSubscribable(Operations) select:] conflicts w/ existing UIKit method

[jonsterling]

One of the consequences of Apple's unfortunate (and usually unnecessary) use of informal protocols is that under UIKit, the NSObject(UIResponderStandardEditActions) category pollutes nearly the entire object namespace with methods like -select:.

The result is that the compiler can't resolve the static type of a -select: message: is it (id → id) → RACSubscribable* or is it id → void? So we get a compiler warning.

This can be solved by renaming RAC's -select: method; with my background, I'd of course suggest -map:, but that would be somewhat non-conformant with the LINQ-inspired scheme you guys have going (as well as the Smalltalk heritage of Objective-C)...

[jonsterling]

Incidentally, the way to reproduce the compiler error is to try writing a category on RACSubscribable and send -select: to self, or try sending -select: to an object statically typed id.

[jspahrsummers]

This was addressed as part of #92. select: is now known as map:.