FYI, I made a new breakout section here for this issue.  I think there is enough new functionality that it deserves its own section with more detail than the single bullet point you have.  I can flesh it out further, but I wanted to give you the option to be the author if you want.  :)  I think Bandpass and SED each deserve a bullet point, as well as the primary use cases (Chromatic, sed * gsobj, ChromaticAtmosphere) and how to integrate over a bandpass when drawing.  

It doesn't need to be very verbose -- one or two lines per item -- but I don't want to downplay this functionality by relegating all of it to a single bullet point.