Force VM image to VS 2017 within the appveyor.yml file (following twitter's advices)
Force VM image to VS 2017 within the appveyor.yml file (following twitter's advices)

NFluent/NFluent,dupdob/NFluent,NFluent/NFluent,tpierrain/NFluent,dupdob/NFluent,tpierrain/NFluent,dupdob/NFluent,tpierrain/NFluent