-------------------
Deprecations:
- Use of vfs keyword argument with open or listlayers has been previously noted
as deprecated, but now triggers a deprecation warning.
Bug fixes:
- fiona.open() can now create new datasets using CRS URNs (823).
- listlayers() now accepts file and Path objects, like open() (825).
- Use new set_proj_search_path() function to set the PROJ data search path. For
GDAL versions before 3.0 this sets the PROJ_LIB environment variable. For
GDAL version 3.0 this calls OSRSetPROJSearchPaths(), which overrides
PROJ_LIB.
- Remove old and unused _drivers extension module.
- Check for header.dxf file instead of pcs.csv when looking for installed GDAL
data. The latter is gone with GDAL 3.0 but the former remains (818).