2019 has been an extremely disappointing year for investors in cannabis stocks, with the overall market, as measured by the New Cannabis Ventures Global Cannabis Stock Index down 20% after a 55% decline in 2018. The market, which has declined over 71% since early 2018, has moved to three-year lows: The current environment is challenging, as funding has dried up, a situation I discussed a month ago. Many companies won’t make it or will have…