artemp d053bddb43 add support for PNG filters (http://www.libpng.org/pub/png/libpng-manual.txt) ref #3479		2017-01-26 15:45:08 +01:00
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mapnik	add support for PNG filters (http://www.libpng.org/pub/png/libpng-manual.txt) ref #3479	2017-01-26 15:45:08 +01:00
build.py	move transform related headers into transform dir to minimize clutter	2017-01-11 11:10:03 +01:00