* 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
The signatures of all cdef class initializers in rasterio._base and
rasterio._io have changed: these method now take instance of ParsedPath
or UnparsedPath from rasterio.path and do not take strings.
New ParsedPath and UnparsedPath classes have been added to improve input
file handling and validation. The existing parse_path and vsi_path
functions have been rewritten to use these new classes and have been
moved to the new rasterio.path module. The signature of rasterio.open
has not been changed and users of Rasterio will be unaffected.
The rasterio.vfs module and its functions are being replaced by new functions
in rasterio.path.
