Add execution times output file
New spdextent module: gives the extent of a bunch of files
allin1: support UPD files
Fix default value for binsize in las2spd
Bugfix of files not founds due to extensions: spdextent
Remove print command statements
New filtering process
Set nrows and ncols to 50
Add temporal path for spdtranslate
Various:

* Add output raster resolution
* Add auxialiar files deletion
* Change print format
* Change output raster format from ENVI to GTiff
* Clean commented code