Rioxarray

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- BUG: Fix reproject with geoloc arrays not named xc|yc (840)

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- DEP: Pin rasterio>=1.3.7 (pull 826)
- BUG:merge: Ensure dims and coords match input array (pull 828)

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- ENH:reproject: Support geolocation arrays (pull 822)
- REF: Add positional arguments requirements (pull 806)
- BUG:merge: Fix merging masked and scaled data (issue 814)
- BUG: Fix chunk arguments for normalize_chunks (pull 820)
- BUG: Squeeze when using interpolate_na with extra dim (pull 810)
* BUG: Properly handle encoding/decoding scales and offsets by (pull 821)
- DOC: Clearer coordinate docstring for `open_rasterio` (pull 811)

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- REF:reproject: Make NaN default float nodata & update integer defaults

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- ENH: Add `allow_one_dimensional_raster` option to `rio.clip_box` (issue 708)
- MNT: recommend `rio.write_crs`` & deprecate `rio.set_crs` (pull 793)

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- BUG: Remove grid_mapping from attrs when writing (pull 783)
- BUG: Ensure gcp_crs exists before writing in `rio.write_gcps` (issue 646)