Release 4.0.0

[osana]

Includes:

• downgrade to java 7 java 7 downgrade #876
• The first and last positions should be equivalent in polygon ring Bug Ready For Review refactor The first and last positions should be equivalent in polygon ring #886
• Fix circle generation in TurfTransformation Fix circle generation in TurfTransformation #885
• coordinates() should have @NotNull annotation in Geometry implementations coordinates() should have @NotNull annotation in Geometry implementations #882
• Tilequery API Tilequery API  #879
• all accesToken fields should be annotated with @nonnull all accesToken fields should be annotated with @NonNull #875

Release checklist @osana

• update this repo's README.md file with new SNAPSHOT version
• Change version name to 4.0.0 in gradle.properties
• Publish 4.0.0 artifact to Maven Central
• Change version name to 4.1.0-SNAPSHOT
• Update CHANGELOG.md
• Tag v4.0.0 in GitHub
• Update Maps SDK dependency

Post-release @langsmith

• Add the Mapbox Java packages' API reference docs to the their respective folders in /android-docs/api/mapbox-java
• Update the constants.js file in android-docs repo so that compile 'com.mapbox.mapboxsdk:mapbox-sdk-services:x.x.x' line is updated in the Gradle section of the MAS overview page
• Update the Android demo app
• Update version # in config files in /help @langsmith
• Update version # in Studio Preview
• Update version # in cnplgn
• Update version # in pthfndr

/cc: @mapbox/android

[langsmith]

🏁 on my end @osana 👏 👏