+- Changed icons from ICNS to PNG form. There are several reasons to do
+ this, all of them minor; but together they're enough to warrant a change.
+ PNG is more common, and therefore more accessible to most users --
+ particularly those who don't use OS X. The PNG files are smaller than
+ their ICNS equivalents. PNG supports a wider range of sizes (although I'm
+ not now using anything that ICNS doesn't support, I might in the future).
+ The icon-scaling support added a few versions ago makes ICNS's support
+ for multiple icon sizes relatively unimportant.
+