Fixed issue #31 (ValueError: Unknown column geometry). Fixed issue #32...

Fixed issue #31 (ValueError: Unknown column geometry). Fixed issue #32 (NotImplementedError: fillna currently only supports filling with a scalar geometry). Added pandas to requirements. Updated version info.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>
2 jobs for bugfix/adapt_to_geopandas_changes in 4 minutes and 59 seconds (queued for 2 seconds)