Mapchete

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* fix index updates on remote TileDirectories (274)
* pass on chunksize to multiprocessing & use ``Pool.__exit__()`` to close (276)
* use GitHub actions instead of Travis CI
* update Fiona dependency to ``1.8.13.post1``


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* speed up extension loading by using ``importlib-metadata`` and ``importlib-resources`` instead of ``pkg_resources`` (267)
* use ``boto`` paging to reduce requests to S3 bucket (268)


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* use init_bounds instead of pyramid bounds on readonly mode (257)
* clean up log messages (fix 251)


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* default process bounds are now bounds of the process pyramid instead of union of inputs (242)
* fix overview pixelbuffer error at Antimeridian (241)
* increased rasterio dependency to version ``1.0.28``
* add hillshade and contour extraction to registered default processes (237)
* enable ``bigtiff`` and ``cog`` settings for single GTiff outputs (247)
* enable ``--cog`` option for ``mapchete convert`` (247)
* enable ``--bidx`` option (band subset) for ``mapchete convert`` (248)
* only initialize inputs if necessary (242)
* use ``rio-cogeo`` logic to determine whether to use a memory dataset or a temp file when writing a single GTiff (217)


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* don't raise exception when one of the registered processes cannot be imported (225)
* don't close pool between zoom levels (227)
* ``_validate`` module renamed to ``validate`` (230)
* fix inverted hillshade & misleading tile reference (229)
* fix custom nodata values in overviews (235)


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* fixed raise of ``FileNotFounderror`` on ``mapchete.io.raster.read_raster_no_crs()``
* fixed overview ``get_parent()`` on zoom 0 in batch processing
* sort processes alphabetically in ``mapchete processes``
* always raise ``FileNotFoundError`` if input file does not exist
* wait for 1 second between retry attempts on file read error
* added ``--overviews`` and ``--overviews-resampling-method`` to ``mapchete convert``
* fixed overview generation when output pixelbuffer was provided (220)
* remote reading fixes (219)

* add GDAL HTTP options
* handle ``AccessDenied`` exception which could occur if after an ``RasterioIOError`` a check is run if the file even exists
* increased required minimum NumPy version to 1.16
* pass on output parameters to mapchete process (215, fixes 214)


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