[BugFix] Define CPs and nested CPs in attrs object once per class #333
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In the current implementation, we are using
defineProperty
to add CPs and nested object CPs in theinit
method of the attrs object creation. This is extremely slow and runs on a per instance basis.This PR removes the need for that by creating a tree of nested classes while applying the CPs on their protos. Once the attrs class is created, it instantiates those classes.