* Support for scrolling with mouse wheel button
* Support for neXtaw widgets
* Bug fixes (randomly occurring segfault fixed -
nargs = 0 not properly reinitialized in menu bar routine !)
Changes 2.7.4:
* All popup windows now behave properly under resize requests.
This corrects former (extremely buggy) behaviour.
* Segfault bug in Print popup corrected
* The transparency activation/disactivation of selected regions
under mouse clicks has been substantially improved.
* Xaw95 widgets have been removed from the source tree, and
Xaw3d is now the recommended widget set.
* Added .bmp format
* Support for .ico format with 24 and 32 bits per pixel
* Now opens a confirmation dialog in case a file is going to be overwritten
* Improved printer management
* graphic.c:
If the user tries to print a file that has never been saved, complain.
* README: Updated maintainer info.
* README: Updated URL for libraries.
Describe use of Print option.
* Help.txt:
Document 'Spline Curve', 'Clone Region', 'Print', and 'Refresh'.
* snapshot.c: Introduced new "Snapshot" operation (grabbing a
window or mouse-selected rectangle from screen)
* Help.txt: updated Help file accordingly
* graphic.c: Introduced a "Clone region" function
* splineOP.c: created basic spline curve operations
* rw/writeTIFF.c: Bug fix; writing TIFF was broken for depth > 8.
* operation.c: Reorganized order of icons in main control panel
* graphic.c: Added a "Print" option in the file menu, to the effect
of calling an external printing utility (xv is a good candidate)
