New commands:
- cdg return the coordinates of the center of gravity
- cosme cosmetic fixes for hot and cold pixels or lines
- cosme_cfa Same function that cosme but applying to RAW CFA images.
- find_hot find hot and cold pixels in images using master-dark
- select select a range of images in the sequence
- seqpsf apply the PSF fit on all images of a sequence, dumping data on the console do to basic astrometry
- setmag defines a magnitude constant to reduce the true magnitude at each PSF computation
- stackall stacks all sequences in the working directory
- unselect unselect a range of images in the sequence
- unsetmag reset the magnitude constant to 0