Add example of Dirichlet process with base distribution #508
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dustinvtran
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The implementation is a little inefficient—it's not clear to me how to make it practical. But the example illustrates the main idea.
Samples from the base distribution are memoized within a call from the DP (i.e., inside a tensor of multiple samples), but not across calls from the DP. This matches the memoization we've been doing with all other Edward random variables.