Draft: Enhancement/gdal for sensor2map
This implements an algorithm to transform from sensor to map geometry, only on the basis of gdal.
TODO:
- implement sensor-to-map warping using GDAL, in-memory
- avoid that GDAL cuts off the corners of the output image
- make sure the target image resolution is correct
- implement coordGrid user parameter
- implement multiprocessing
- implement different resampling algorithms
- validate results
- update tests
- update HISTORY.rst
- test on Windows
Closes #9.