This was originally intended to address #354, but in fact it doesn't. See the issue for why. Nevertheless it's worth getting into main for code cleanliness's sake.
The change
Iterating through functions one at a time used the slow .sel methods inside a list comprehension. Replace this with the new argument interface from #374.
Also speed up ExpressionSet.__copy__ and ExpressinoSet.__getitem__.
This was originally intended to address #354, but in fact it doesn't. See the issue for why. Nevertheless it's worth getting into
mainfor code cleanliness's sake.The change
.selmethods inside a list comprehension. Replace this with the new argument interface from #374.ExpressionSet.__copy__andExpressinoSet.__getitem__.