Android 5.0 Features Beta 2

• Refines algorithm for background scanning on Android 5 to be more battery friendly
• Restart scanning on Android 5 so we repeatedly see connectable beacons
• Synchronize scan intervals so multiple apps scanning with the library do so at the same time
• Splits out Android 4.x scanner from Android 5 scanner to avoid warnings
• Fix bug in http redirection limit downloading distance models
• Fix bug causing NaN in distance estimate
• Fix data fields that didn't update with each ranging measurement
• Add bintray deployment
• Upgrade build to use Android Studio 1.0 and latest dependencies