[python-control-developers] [python-control/python-control] f79fbe: Fix readthedocs issues (#216)

[Richard M. <mu...@cd...>]

  Branch: refs/heads/master
  Home:   https://github.com/python-control/python-control
  Commit: f79fbe42d2c60a7471a206f255b12789d3b740e2
      https://github.com/python-control/python-control/commit/f79fbe42d2c60a7471a206f255b12789d3b740e2
  Author: Richard Murray <mu...@cd...>
  Date:   2018-07-04 (Wed, 04 Jul 2018)

  Changed paths:
    M control/bdalg.py
    M control/freqplot.py
    M control/lti.py
    M control/margins.py
    M control/modelsimp.py
    M control/robust.py
    M control/statefbk.py
    M control/statesp.py
    M doc-requirements.txt
    M doc/Makefile
    M doc/classes.rst
    M doc/conf.py
    M doc/control.rst
    M doc/conventions.rst
    M doc/index.rst
    M doc/intro.rst
    M doc/matlab.rst

  Log Message:
  -----------
  Fix readthedocs issues (#216)

* updated readthedoc requirements to use generic sphinx and include numpy, scipy, matplotlib
* updated docstrings to fix sphinx warning messages and errors
* updated documentation style for more consistency



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