Pull GeometryListArray subclass out of GeometryArray to separate pyarrow ListArray specific logic. This sets the stage for GeometryArray subclasses based on other pyarrow types.
export to_geometry_array from spatialpandas.geometry
remove the GeometryArray.offsets property. This was a holdover from when the GeometryArray class was backed by a pyarrow ChunkedArray
Add absolute_import future flag throughout for Python 2
Rename test files to start with test_* prefix so pytest discovers them automatically
Refactor/cleanup extension array class hierarchy
GeometryListArraysubclass out ofGeometryArrayto separate pyarrowListArrayspecific logic. This sets the stage forGeometryArraysubclasses based on other pyarrow types.to_geometry_arrayfromspatialpandas.geometryGeometryArray.offsetsproperty. This was a holdover from when theGeometryArrayclass was backed by a pyarrowChunkedArrayabsolute_importfuture flag throughout for Python 2