Gen-Splitter

Changes:

• Now respects the drop configurations of MBedwars (Thanks @MrEAlderson )
• Fixes that items would drop with no killer, even though "drops-killer-auto-pickup" was enabled (Thanks @MrEAlderson )
• Now sums up same item types into a single message (previously it'd say e.g. "+64 diamonds" and "+21 diamonds") (Thanks @MrEAlderson )

Requires MBedwars v5.5.3