
A classic gamma curve can be appled to the whole image or a selected area. 
This was already available in another form, but this more conventional 
method was often requested.

A new function is available to straighten a tetragon into a rectangle,
e.g. a gallery painting photographed at an angle to avoid reflections.

Slide Show can optionally show only the last version of each image,
and the spacebar can be used to pause/resume.

Printing was revised to work better with recent changes in HPLIP
("paper mismatch" errors).

The user is informed if new files are found since the last session, 
with an option to perform an incremental synchronization.

The user is warned when overwriting an original (non-versioned) image.
This warning can be permanently suppressed if desired.


