Update place to use scipy.signal.place_poles#176

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murrayrm merged 6 commits intopython-control:masterfrom

rabraker:update_place

Jan 5, 2018

Commits on Jan 4, 2018

Added tests for acker, and place_varga. Added an assert_raises test for repeated poles in place. Added placeholder tests in matlab_test for place and acker and reverted the repeated pole test for p…
rabraker
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Forgot to check that slycot is installed in testPlace_varga()
rabraker
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