Color emoji support for true type COLR version 0. that is, the simpler implementation #224
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Support for colorful emojis based on True Type Color version 0 support (the simpler one).
See discussion in #223 for more details.
As a side effect content contexts now have a
SetOpacityoperator to set an alpha value for drawing. The implementation is very much inspired by the opacity support of @chunyenHuang in hummusRecipe (now part of MuhammaraJS), with generating a minimal set of ExternalGState, and setting both filling and stroke (which makes it much easier to get it right).The high level options object for drawing text and line art also contain an opacity factor now.