Simplify travis config and pin mono to 5.20 (#927)
Simplify travis config and pin mono to 5.20 (#927)


yagweb/pythonnet,AlexCatarino/pythonnet,yagweb/pythonnet,QuantConnect/pythonnet,QuantConnect/pythonnet,AlexCatarino/pythonnet,yagweb/pythonnet,pythonnet/pythonnet,QuantConnect/pythonnet,AlexCatarino/pythonnet,AlexCatarino/pythonnet,pythonnet/pythonnet,pythonnet/pythonnet,yagweb/pythonnet