Update change log, authors, version

Update version and change log for rc5

Add information about support

Update change log

Remove deprecated features and bump version to 1.0rc2 (rasterio#1392)

Merge branch 'master' of github.com:mapbox/rasterio

Conflicts:
	tests/test_env.py

Bump version and update change log

Update version and change log

Update version and change log

Merge branch 'master' of github.com:mapbox/rasterio