Add upper version contraint for the coverage depedency (coverage 4.0 breaks coveralls).
Add upper version contraint for the coverage depedency (coverage 4.0 breaks coveralls).
coagulant/coveralls-python,manish211/coveralls-python,jessamynsmith/coveralls-python,jvarho/coveralls-python,lolletsoc/coveralls-python,ionelmc/coveralls-python,Jwpe/coveralls-python,coveralls-clients/coveralls-python