support nodata parameter for tiling #360
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Related Issue(s):
Proposed Changes:
nodataparameter in tiling parameters, so that nodata values will be interpreted by titiler as transparent rather than blackPR Checklist:
Testing
Without the nodata parameter set: tile a scene that has a partial coverage from Earth Search sentinel-2-c1-l2a. Notice that the area that is not covered in the scene is black instead of transparent (e.g., black covers the base map)
With the nodata parameter set to 0 for collection sentinel-2-c1-l2a: tile a scene that has a partial coverage from Earth Search sentinel-2-c1-l2a. Notice that the area that is not covered in the scene is transparent and the base map can be seen.