25c75771a0
Do not do the heuristic trials of the first 10 methods when -brute is
specified, because it did not save time as I hoped.
Fixed a mistake in 1.7.45 and 1.7.46 that caused the output file to
not be written.
Version 1.7.46 (built with libpng-1.5.13 and zlib-1.2.7)
Moved the new level 0 methods to the end of the trial list (methods 137-148)
Version 1.7.45 (built with libpng-1.5.13 and zlib-1.2.7)
Added method 0 (uncompressed). "-m 0" now simply turns on method 0.
Added "-try10" option that has the same effect that "-m 0" previously did,
namely to try only the first ten methods.
Inserted new methods 17 through 21 with zlib level 0.
Do the heuristic trials of the first 10 methods when -brute is specified,
to get quickly to a small solution, so we can bail out of most of the
remaining trials early. Previously these 10 methods were skipped during
a -brute run.
Removed the "-reduce" line from the help screen when PNGCRUSH_COUNT_COLORS
is disabled.
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