Merged requested to merge enhancement/improve_metahandling into master
- 'make lint' now directly prints the log outputs.
- Band names and nodata values are now correctly read in case of data formats other than ENVI.
- Improved saved metadata for all formats (mainly applies to band names and nodata values).
- Fixed nodata value not passed through when reading a data format other than ENVI and saving in ENVI format.