change version to 2.0-snapshot to indicate major upcoming change
adapt translate, distance, and circle2polygon methods to geojson
fixed polygonContains, getBbox
refactored getPolygonCenter to have correct local var names
fix expandPolygon, document code
removed bitset related methods, didn't quite trust them, were not used, and lacked good tests

fixed decode method to return lon,lat
add missing encode function for geojson points
Api cleanup
Api cleanup and javadoc
Updated documentation