Ecoshard

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* Added ``--hash_length`` flag to command line to limit the hash character
length of hashed files.
* Added functionality to run ``python -m ecoshard process ...`` command in
parallel if multiple files match the file pattern target.

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* Added a ``run_parallel`` flag to allow for parallel warps
``geoprocessing.stitch_rasters`` for parallel warping of rasters.

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* Added functionality to publish a local file directly to an EcoShard server.
This is available in the command line publish command whose arguments have
been redefined from the previous version.
* Added flag to allow for multi-thread version of TaskGraph.
* Fixed issue with geoprocessing bounding box projection on exotic projections
such as sinusoidal to wgs84.
* Added a ``get_utm_zone`` function that calculates the EPSG code for the
major UTM zones given a lat/lng coordinate.
* Fixed an issue that would cause a crash in stitching rasters where the base
raster was too far up/left of the target stitch raster but still overlapped
with the stitch target.
* Added functionality to ``geoprocessing.routing`` to extract stream layer
based on Strahler stream order and build subwatersheds and vector stream
layer from that information.

* ``geoproceesing.routing.extract_strahler_streams_d8``
* ``geoprocessing.routing.calculate_subwatershed_boundary``

* Added functionality to detect the lowest drain or sink in a DEM in
``geoprocessing.routing.detect_lowest_drain_and_sink``.
* Added functionality to detect all outlets as a geometry layer in
``geoprocessing.routing.detect_outlets``.
* Added a ``--hash_substring_len`` flag to limit the number of characters in
the hash generated by ``--hash_file``.

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* Changed behavior of command line function, now takes one of two primary
commands ``process`` or ``publish``. The command ``process`` behaves like
the original command line utility with same arguments and behavior. The
``publish`` command takes a Google Bucket URI, host to an ecoshard server,
and an api key and published the raster to that server.
* Fixed an issue when summing up that would ignore nodata values.
* Fixes an issue where the overview interpolation argument was ignored.
* Added a ``download_and_unzip`` function to the API.

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* Fixed an issue that would cause the download rate to be under estimated.

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* Fixing an issue in download_to_url where the file might not be flushed and the
final log message is not printed.