Support for parsing a collection of collections

[elliotchance]

Something that could be done with a loop:

NSArray *objs = ...
NSMutableArray *decoded = [NSMutableArray new];
for (NSDictionary *obj in objs) {
    [decoded addObject:[SomeObject objectWith...]];
}

Can be simplified to something like:

NSArray *objs = ...
NSArray *decoded = [SomeObject objectsWith...: objs];