Laserfarm

Fixed:
- Fixed remaining compatibility issues with Windows (e.g. in GeoTIFF writer)
- Dropped deprecated pylas dependency (with lazperf) - use laspy (with lazrs) instead

Added:
- Test suit runs on Windows/Mac and different Python versions
- Installations instructions are provided on readthedocs as well

Changed:
- Following updates in laserchicken 0.6.0, features including "<" have been renamed.

Fixed:
- Compatibility issues (mainly path and logging related) to run on Windows

Fixed:
- Token authentication can be now used for WebDAV remote data access

Fixed:
- Fix import of the GDAL library

Added:
- A method for setting up multiple custom features is added to the data processing pipeline.

Added:
- The KDTree's cached by Laserchicken is cleared in the data_processing (optional) and classification pipelines.

Changed:
- Dask's futures are released as soon as finished, freeing memory of the workers