Xarray Sentinel Versions Save

Fix the crash on products generated by the new IPF 3.40 processor #79

Overall the software is in the alpha phase and the usual caveats apply. A few features, identified as technology preview below, are not fully usable yet.

• supports the following data products as distributed by ESA:
  • Sentinel-1 Single Look Complex (SLC):
    • Stripmap (SM)
    • Interferometric Wide Swath (IW)
    • Extra Wide Swath (EW)
    • Wave (WV) - technology preview
  • Sentinel-1 Ground Range Detected (GRD) SM/IW/EW/WV - technology preview
• creates ready-to-use Xarray Datasets that map the data lazily and efficiently in terms of both memory usage and disk / network access
• reads all SAR imagery data: GRD images, SLC swaths and SLC bursts
• reads several metadata elements: satellite orbit and attitude, ground control points, radiometric calibration look up tables, Doppler centroid estimation and more
• reads uncompressed and compressed SAFE data products on the local computer or on a network via fsspec - technology preview
• allows larger-than-memory and distributed processing via dask

Fix the wheel package on PyPI, issue #43

Initial release.