README: Remove references to block-property syntax
inject/reduce: fix conflicting return types in implementation
appledoc: Add missing parameter docs in EKSemaphore
Revert "Add block type typedefs for improved API readability"

This reverts commit 1531fda1d9813f16516777eb0d3b153a9e844265.

Conflicts:
	EnumeratorKit/Core/EKEnumerable.h
	EnumeratorKit/Core/EKEnumerable.m
Call -includeEKEnumerable in +load in the appropriate categories

+load is sent uniquely to every class and category, not inherited, so
there is no need to place these calls in EKEnumerable.m.