bbf9e246e0
++ Added pngxtern, a libpng add-on for external image format support: BMP (uncompressed), GIF, PNM. (This was incorporated from OptiPNG-Plus.) ++ Implemented RGB(A)-to-palette reductions. + If trials are ended prematurely, detailed progression is only reported under the user option -v. - Removed reporting of some IDAT sizes that exceeded the optimum. (This was NOT a bug, but a "feature" that confused some users.) ! Fixed an RGB-to-gray reduction problem that occured under some specific background colors. + Added support for builds based on the system-supplied zlib. * Modified LICENSE. It is now a verbatim spell of the zlib license. |
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