* Refactor of _CRS class to make WKT canonical
* Finish work on making WKT canonical
Many test assertions needed update
* Accept {'init': 'EPSG:xxxx'}
Also removed commented code
* Restore previous rio-info behavior when there's an EPSG code
* Remove unneeded import
* Use from_proj4 in from_epsg
* Rewrite of _CRS to keep an OGRSpatialReferenceH (#1602)
* Rewrite of _CRS to keep an OGRSpatialReferenceH
Rewrite of CRS to use _CRS by composition, not inheritance
New OGRErr handling function exc_wrap_ogrerr
* Remove commented code
* Add back in the error stack check for ImportFromProj
Also fix up docstrings
* Use VRT instead of in-memory raster when calculating transform
Resolves#1131
* Add a test that confirms no OOM error
* Reduce testing precision
* Accomodate GDAL 1.11
* Update change log
New Env class and tests.
More logging, tests, safer environment
Remove usage (deprecated) of rasterio.drivers()
Also pep8 cleanups throughout the tests and a fix for unchecked
dtypes when opening a dataset in 'w' mode.
Now we can simply import warnings in __init__.py. In the
deprecations tests, we needed to see a single warning only one
time to avoid multiple drivers() warnings.
Add a global env.
Add rasterio.env.setenv()
