Fix direct dependency versions (aka "making this book live a little longer")#512

flonix8 wants to merge 2 commits intorlabbe:masterrlabbe/Kalman-and-Bayesian-Filters-in-Python:masterfrom

flonix8:fix-dependenciesflonix8/Kalman-and-Bayesian-Filters-in-Python:fix-dependenciesCopy head branch name to clipboard