Merge pull request #16 from anthonyliao/master

Add dependency of INAddRemoveTagsTask to INSaveTagTask
[lru cache] Store a lastAccessedAt on each object
[message sizing] Updates for iOS 8 compatibility
[reply] De-dupe participants on email when replying
[files] Properly handle files as `file_ids` or `files`
[podspec] Update to AFNetworking 2.4.1, use cocoapod dependencies for AFNetworking, FMDB
[podspec] Version bump to 0.0.6
[pod] Only use dependency namespacing when building framework, not pod
[db] Fix for SQL syntax issues around lastAccessedAt
[message] Use attached instance lookup to prevent select queries inside existing db transaction
Merge pull request #1 from inboxapp/master

merge inbox-ios changes into fork