Update knapsack_pro v0.15.2
Update knapsack_pro v0.15.2

KnapsackPro/rails-app-with-knapsack_pro,KnapsackPro/rails-app-with-knapsack_pro,KnapsackPro/rails-app-with-knapsack_pro,KnapsackPro/rails-app-with-knapsack_pro