Introduce GRMustacheRuntime
code cleanup
Refactoring GRMustacheDelegate WIP
Merge branch 'master' into runtime
NSOrderedSet is iOS5 / 10.7 and beyond. Avoid referencing it directly to keep compatibility with older sdks
Merge pull request #23 from Bertrand/6b5ea5c1ffddf99b3ee2cd2c9e938027e77faa1f

Compatibility with older sdks
v4.3.4
Fixed a guide link
Merge branch 'master' into runtime
Remove unused file
Restore GRMustacheTemplateDelegate API
Remove unused GRMustacheExpression.h public header
Remove deprecated public APIs
Code cleanup
Code cleanup
Code cleanup
Drop GRMustacheContext
Document [GRMustacheRuntime objectIsFoundationCollectionWhoseImplementationOfValueForKeyReturnsAnotherCollection:] implementation
Performance improvements
iOS target is 4.0