got rid of indexed mode, use apply colors filter instead
adding dithering option to apply palette filter
alpha channel bugfixes in applyPalette
added gamma correction to palette stretching
save appends extension now
save appends extension now
removed get_extension (fltk has it already)
added drag and drop support
tool updates/bugfixes, crop button works now
fixed crop display bugs, can pan view while cropping now
make palette X's a bit darker
updated readme/screenshot
updated readme/screenshot
updated readme/screenshot
updated readme/screenshot
put widgets into anonymous namespace
put all gui components into anonymous namespace, refactored accordingly
moved palette load/save into File class and fixed bugs
fixed redraw bug when panning while making a polygon
undo bugfixes