Rasterio 1.0 Release Candidates Number Two and Three

Rasterio 1.0 release candidates two and three are out, the latter is on PyPI today: https://pypi.org/project/rasterio/1.0rc3/.

The project also has brand-new, old-fashioned users and developers discussion groups. Please subscribe to one or both of these if you'd like to receive announcements, help your fellow Rasterio users, or contribute to the further development of the package. Thanks!