[Biococoa-dev] Subclass organization

[John Timmer]

> 
> By lack of a BCNucleotideSymbol class, I put the complements method in
> BCSymbol for the time being. You can move them to the
> BCNucleotideSymbol class, but I also like Charles' suggestion to let
> the method return self in such cases. The same can be said for other
> methods that only work on certain symbols or sequences, eg translation.
> 

Yeah - asking for a translation of a protein and getting the protein doesn't
seem unreasonable, and is certainly safer than getting nil.

I'll put in the BCSymbolNucleotide tomorrow, along with the
BCSequenceNucleotide.

JT

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