Snowplow Android Tracker v0.4.0

Split the tracker out into Classic and RxJava versions

• Blog post

Bug fixes

• Fixed ti_qu being converted from an int to a double (#127)
• Fixed classic emitter status reporting (#124)
• Fixed trackStructuredEvent() misleading docs (#106)
• Fixed trackStructuredEvent value should be a Float or Double, not int (#101)
• Gracefully handling lack of getAdvertisingIdInfo (#118)

New features

• Added emitter setter functions to update URI (#122)
• Added method to get the Idfa (#121)
• Added device sent time on outbound events (#108)
• Added user timings event (#63)
• Created SubjectBuilder to make creating a new subject easier (#98)
• Added builder option to Emitter which allows the EMITTER_EMPTY_EVENTS_LIMIT to be set (#97)
• Added builder option to Emitter which allows the EMITTER_SEND_LIMIT to be set (#96)
• Added builder option to Emitter which allows the EMITTER_TICK to be set (#95)
• Added builder option to Tracker which allows custom logging modes to be set (#94)

Better asynchronous support

• Converted all Tracker.trackXXX functions into runnables (#125)
• Converted all Tracker.trackXXX functions into RxJava Observables (#86)
• Added emitter flush function (#123)
• Added batching based on payload size (#110)

Under the hood

• Bumped payload_data version to 1-0-3 (#109)
• Using Google Play Services' analytic-specific library (6.5+) (#34)

Documentation, testing and help

• Moved mountebank imposter into a static file in test/resources (#90)
• Added test app (#56)