Changes from 1.0.17 to 1.0.18 (bukkit / spigot/bukkit - 1.7.9 - 1.8.x)
+ Fixed glitch with Fill-Chain. If a player only had one Knapsack and it was configured to be in the players fill-chain, set to fill first (-first) the filling would not take place unless the player filtered or had preferred items assigned to it or another Knapsack exisited in the fill-chain with filtered items.