Ignore /dist build directory
Adding valid geography functions

(just missing crosses and touches from the geometry set, I think)
Geometry support added into spatial_lookup_sql
Geography support in spatial_aggregate_sql
Deleting from_text/wkb; don't think they were used

(Which is lucky, because sql server requires a geometry/geography
namespace and since they're just static strings we had no way of using
the correct namespace.  It looks like they're only used under a
if-spatialite clause though)
Version bump after merging geography support
Implementing bounding-box methods
setup.py description correction; uses django-pyodbc-azure
Version bump, & update README with support details