Imager-0.38

Changes for version 0.38

Added lots of color quantization code from Tony with benchmarks.
Also fixes ugly stack overrun in old version. Added fixes for the lmfixed problem. Four of them, let's see which is fastest. This version adds some voronoi partitioning - it's dog slow but it's a reference implementation to check if faster algorithms are doing the right thing [tm]. Added a check for giflib 3.
Win32 support for libpng
fixed set_internal creating 2 refs to one object
Win32 support for jpeg
Win32 support for tiff
base level error reporting code added, I still need to modify older code to use it
fix translate=>'giflib' handling of single-colour images. Previously a single colour image would cause an error in MakeMapObject().
fix t/t10formats.t tests against giflib3
added test for transparent gifs
minor doc fixes for transparent gifs
make it less error-prone to write transparent gifs
documented the options for reading raw images
Changes switched to use spaces for formatting
switch gif.c to new error reporting with related changes to Imager.xs, Imager.pm
each of the image formats now have their own test file, extracted from t10formats.t, usually with som extra tests
Added flip() and docs to Imager.pm and i_flipxy to image.c. Added testcases too.
Fixed an overflow bug in png.c
added the colors parameter to Imager::read() which receives the arrayref of colours that i_readgif(_scalar) returns
fixed a problem in makemap_addi in quant.c where only the first image was compared against the palette when the palette was being refined. I screwed up on this originally (TC). This is the other half of a fix for Leolo's lmfixed problem <sigh>.
makemap_addi() now only puts colours into the palette that it found while optimizing the palette (so we don't get 256 colour palettes for 2 colour images :)
initial implementation of a row-based interface to low-level images (for performance)
changed Imager::read() for GIF so that the arrayref pointed to by the ref supplied in colors contains Imager::Color objects instead of more arrayrefs, keep this interface stable until we can make an informed choice about i_readgif()
incorporated Micksa's faxable tiff support, treating as a type of tiff rather than a separate format
t/t70newgif.t now checks for gif support
added the convert() method
Added support for transparent to alpha conversion during loading of png files. Note that libpng 1.0.1 is broken in handling this, we know that 1.0.5 works.
support for writing PGM (portable gray map) files
Fix for i_gifread_low() for images with only a local and no global colormap and an abort if no colormap is present (which is legal in gif).
several fixes to i_readgif_low()
Fixed crop() method so that it is consistent with documentation.
make clean now removes the testout directory
added tests for the OO interface for tiff, added an option to choose the resolution for fax tiffs, removed some unused code, fixed minor problems with Imager::write() handling of image types
changed README note on libgif bug to refer to t105gif.t instead of t10formats.t
For latest versions check the Imager-devel pages: http://www.eecs.umich.edu/~addi/perl/Imager/devel/