Running ANARCI (hmmer) in parallel for multiple sequences

[y1zhou]

When we want to number multiple sequences, ANARCI takes an ncpu argument that allows running hmmer in parallel. Here it seems the Chain class can only take one sequence and send it to ANARCI. Would it be possible to have a wrapper class (e.g. Chains) that runs ANARCI in parallel?

Great work with this package! Interpreting the outputs of these is so much easier than those of ANARCI's.