Release Android v6.0.0-beta.7

[tobrun]

In preparation for release v6.0.0 of the Mapbox Android SDK, we're releasing today the 7th beta in the 6.0.x series. The 6.x release brings major features as:

• Heatmap support
• Refreshed gestures handling
• Expressions
• HillshadeLayer and RasterDemSource
• CustomGeometrySource
• ViewportCollision detection
• Transparent TextureView

Please note that this is a pre-release version intended to gather early feedback on the new APIs and to detect any potential issues (you can report them here). This release is not intended for production apps.

Changes since v6.0.0-beta.6

• Add abs, round, floor, ceil expression operators #11653
• LatLngBounds correct center calculation #11650
• Bump telemetry to 3.0.0 final #11658
• Correctly calculate LatLngBounds #11647
• Add convenience step expression #11641
• Add javadoc examples for Android #11540
• Add paused state to map renderer, don't render snapshots after onPause #11358
• Rework internal expression conversion #11490
• Fixed gesture event listeners javadoc #11630
• Add delete local reference on jni strings #11608
• Release local references early #11599
• Re-bind uniform locations after re-linking program #11618
• Bump mapbox-sdk-services to 3.0.1 #11593

Todo

• Create release branch
• Change CircleCI config to build from release branch (android-release-all->deploy)
• Change version name to 6.0.0-beta.7 in /platform/android/MapboxGLAndroidSDK/gradle.properties
• Publish 6.0.0-beta.7 artifact to Maven Central
• Tag android-v6.0.0-beta.7
• Change version name to 6.0.0-SNAPSHOT in /platform/android/MapboxGLAndroidSDK/gradle.properties
• Change CircleCI config to build back from release branch
• Merge release-android-v6.0.0-beta.7 back into release-boba
• Update Javadoc documentation via release branch, not master @langsmith
• Create new Fabric release @langsmith

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/cc @mapbox/mobile @mapbox/support @colleenmcginnis