Reorganise upgrade documentation#63

itowlson merged 1 commit intospinframework:mainspinframework/spin-docs:mainfrom

itowlson:upgrade-at-the-bargain-price-of-consulting-one-wafer-thin-chartitowlson/spin-docs:upgrade-at-the-bargain-price-of-consulting-one-wafer-thin-chartCopy head branch name to clipboard