Removed ender_chest from container types - will use a different mechanism for this.
<xs:restriction base="xs:string">
<xs:enumeration value="dispenser" />
<xs:enumeration value="chest" />
- <xs:enumeration value="ender_chest" />
<xs:enumeration value="trapped_chest" />
<xs:enumeration value="hopper" />
<xs:enumeration value="dropper" />
