improve import process
don't install tests
debug boxplot, unstack for multi-dataset support
option to boxplot by month
geojson improvements

 - re-enable pagination
 - dont set SRID for simple lat/lon data
 - same fields as normal list serializer, plus locations
include serialized parent object in filtered list context
allow for dict as data in from_native
better error messages for multi-column metadata
better time handling
Merge pull request #17 from wq/dbio

improvements to dbio, chart, and geojson support