fixed the spatial pom.xml
Merge branch 'master' into spatial
getMaxDistanceKmItemIds
Working GADM converter.
Working GADM converter.
Merge branch 'master' into spatial

Conflicts:
	wikibrain-spatial/src/main/java/org/wikibrain/spatial/cookbook/ShapeFileConverterTest.java
	wikibrain-spatial/src/main/java/org/wikibrain/spatial/loader/GADMConverter.java
Working GADM converter.
update gitignore
Used a new downloader. More information to user. Optimized memory use.
Fixed conflict
Fixed conflict
conflict fix
small fixes
Merge branch 'master' into spatial
KNN alive!
gitignore
A working (but super slow) topological dist metric

Gotta optimize the performance later
Convenience functions
Simple validation of convenience functions, and all metadata-related functions are also here.
More convenience stuff