Use binary plists instead of NSKeyedArchiver. On iPhone 4 / iOS5, this causes Mixpanel initialization time decrease from ~100ms to ~5ms.
Don't throw an exception on nil parameter
Fix crash on launch due to immutable super properties
Use new filenames for binaryplist data.
Fix exception caused by trying to mutate an immutable array
Fix another Mixpanel crasher
Don't transmit carrier name
Revert "Don't transmit carrier name"

This reverts commit bd1ec0709ec18a1123628af679a4ffbd1b76b9de.
Merge branch 'master' of github.com:path/mixpanel-iphone