v2.5.1

• Fix crash when array or dictionary is modified during JSON serialization

v2.5.0

• Static methods are now deprecated. Use the [Amplitude instance] singleton instead.
• Enable configuration of eventUploadThreshold, eventMaxCount, eventUploadMaxBatchSize, eventUploadPeriodSeconds, minTimeBetweenSessionsMillis, and sessionTimeoutMillis.

v2.4.0

• Expose the startSession method publicly. Can be used to start a session for a user interaction that happens while the app is in the background, for example, changing tracks on background audio.
• No longer starts a session if the app is in the background when the SDK is initialized. Prevents logging of silent push notifications from starting a session and counting a user visit. This changes the previous default behavior. To maintain the previous behavior, use initializeApiKey:apiKey:userId:startSession and set startSession to true.

v2.3.0

• Add opt out method to disable logging for a user
• Fix CLLocationManager authorization constants warning
• Add method for adding new user properties without replacing. Make it default
• Fix base64 string deprecation warning

v2.2.4

• Fix a crash bug in AMPLocationManagerDelegate

v2.2.3

• Only register UI notification observers once
• Refactor Amplitude to a singleton object (class methods still exist).

v2.2.2

• Decouple platform and OS
• Rename fields in event JSON
• Send library information

v2.2.1

• Added AMP prefixes to avoid naming collisions

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.