v2.2.0

• Fix memory leak in generated UUID
• Default cocoapods require_arc = true
• Send IDFA for attribution
• Change data directory to be NSLibraryDirectory instead of NSCachesDirectory
• Fix bug where session id could be reset if lots of events were generated quickly
• Keep an instance of CTTelephonyNetworkInfo (resolves #13)

v2.1.1

Converts events objects to a JSON serializable format.

v2.1.0

Adds new logRevenue and getDeviceId methods.