Rio-tiler-crs

* remove `pkg_resources` (https://github.com/pypa/setuptools/issues/510)

Note: We changed the versioning scheme to `{major}.{minor}.{path}-{pre}{prenum}`

* Adapt for rio-tiler==2.0b13

* Forward reader_options in kwargs for COGReader.tile (13)

* Update to rio-tiler 2.0b7 and switch to attr (ref: https://github.com/cogeotiff/rio-tiler/pull/225)

* Update rio-tiler and raise MissingAsset exception instead of InvalidBandName (10)

* STACReader.tile raises rio-tiler.error.InvalidBandName when no asset nor expression (8)