Proposal: Dist shape refactor#1125

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twiecki wants to merge 17 commits intopymc-devs:masterfrom

brandonwillard:dist-shape-refactor

Commits on Jan 2, 2017

Commits on Jan 3, 2017

fixed some shape issues in transform and advi logic
brandonwillard
committed
started shape handling updates for missing data
brandonwillard
committed
refactored discrete dist. constructors; added support for (depricated) shape argument
brandonwillard
committed

Commits on Jan 4, 2017

fixes to univariate shape determination; typo fixes in multivatiate (still not ready)
brandonwillard
committed
fixed test_value replications issue
brandonwillard
committed
fixed another broadcasting issue; started updating tests
brandonwillard
committed