added imdb example dataset
moved dataset load to own classes
refactor
added terms aggregation
rename histogram example to aggregation
added geonames dataset
geohash aggregation
[maven-release-plugin] prepare release v0.7.0
[maven-release-plugin] prepare for next development iteration
updated READMEs for 0.7.0
show map in geohash example
edge input format
fix zero boost issue
support getting edge labels
faster find edges
add check for null property names
change ids to strings