Specify Sphinx version >=1.8,<2 in dev dependencies
Specify Sphinx version >=1.8,<2 in dev dependencies

Signed-off-by: Håkon Wiik Ånes <758f716cde142606ec08e2d8cb07e5875a383d6e@gmail.com>

ljvmiranda921/pyswarms,ljvmiranda921/pyswarms