2012/07/01 version 1.17 Document -file_format, -quality_percent common attributes. 2011/07/10 version 1.16 New diamond() method. 2011/02/15 version 1.15 Tests use plain Test.pm 2011/01/26 version 1.14 Oops, actual add_colours() code, not just docs. 2011/01/23 version 1.13 Add add_colours() base method. Document some common attributes like -file. 2010/11/17 version 1.12 Add ellipse() $fill parameter. 2010/10/22 version 1.11 Tweak ellipse() discriminator changeover, use rectangle() for smalls. 2010/10/08 version 1.10 Enhance rectangle() unfilled to not overlap drawn pixels. 2010/10/04 version 1.09 Fix ellipse() on even width or height. - avoid calling xy() with 0.5 fractional position - helps drawing of right/bottom edges depending how subclasses rounded Fix ellipse() horizontal ends when small height and big width. Docs cross reference modules extending Image::Base. 2010/09/18 version 1.08 Fix line() for shallow slope rounding. Fix line() for steep slope pixel spacing. 2000/05/05 Added some basic drawing methods. Minor documentation changes. 2000/05/04 Created.