See if there is way to add dispatching to plotAbundance

[Jason Vander Heiden]

estimateAbundance currently returns a data.frame instead of a custom class. Need to investigate if there is a way we can add dispatching of the output to plotAbundance for a plot method while keeping the output as a data.frame/tibble.

[Jason Vander Heiden]

I don't see a reason we can't just make this a custom class instead. I'll do that instead.

Though, the answer to the original question appears to be setClass("AbundanceCurve", contains="data.frame").

[Jason Vander Heiden]

Done in 8bd361f.