d0ppelganger

Based on Patrick Amadon's [Doppelgänger](https://opensea.io/collection/amadondoppelganger) piece, these music works can change the art displayed. The list of possible works is populated but public submissions of derivate works, all onchain. Each entry must be voted for by all holders to be added to the official list. There are also a number of extra onchain functions: zConsolidate - Owner of all 4 tokens can combine them into a 1/1 zDisintegrate - the 1/1 can be refractionalized to the 4 zProliferate - 1/1 holder can add mintable tokens to the collection, totaling 969