Mapbox Java SDK v4.9.0-alpha.1

• Fixed up bintray publish script, generate sources and javadoc jars #1065
• Keep *.java files in source.jar artifacts #1064
• Added setup for bintray release process #1037
• Add an API to check if a custom shifter is set. #1062
• Added new nearestPointOnLine default and custom distance unit #1058
• Adjustments to TurfMeasurement#bboxPolygon() to return a Feature instead of Polygon #1055
• Added fuzzyMatch support to MapboxGeocoding #1051
• Add Interceptor support to Directions Refresh API and enable Debug logging #1039
• Add square() api to TurfMeasurement #1019
• Adjusted link to Turf installation instructions #1038
• Removed the last updated line from ported Turf method list #1032
• Making GeoJson extend Serializable #1034
• Add support for Turf envelope #1020