Natalie Weizenbaum 227329f9c3 Add rgba(). ... This also adds built-in function overloading. This adds some extra layers to the default function-call logic which could be avoided by handling overloading purely in the callbacks of functions that require it, but it's not clear how to share logic gracefully between the perform visitor and function helpers.		2016-09-30 12:41:41 -07:00
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src	Add rgba().	2016-09-30 12:41:41 -07:00