refacored and backfilled tests, removed some lenses we weren't using#12

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bmaddy wants to merge 6 commits intomasterfrom lens_tests

+707-219

Commits on Apr 22, 2014

refacored and backfilled tests, removed some lenses we weren't using
bmaddy
committed

Commits on Apr 27, 2014

changed lenses to a more OO style
bmaddy
committed

Commits on Jun 15, 2014

Commits on Apr 6, 2015

Merge pull request #14 from bmaddy/lens_tests
jeremyf
committed