Moved "bio" back to "person", but with type-specific storage. People can fight over where such things belong on another day, for now keepin…
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Moved "bio" back to "person", but with type-specific storage. People canfight over where such things belong on another day, for now keeping it in"person" has the advantage that the Tcl API is 100% unchanged so moving itto type-specific storage won't break .LRN.
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