Plant saplings

[AngleWyrm]

Lumberjack plants a sapling if he has them in his inventory

[boycat97]

Thoughts on this item:

• Maintain a level of saplings, if saplings get below a certain level and the chopping a tree hasn't yielded anything start homeward bound.
• Add sapling inventory based on type of saplings retrieved.
• Maybe if sapling isn't placed after movement look for sapling instead on ground.

[AngleWyrm]

• The level of saplings is set in EntityCitizen.desiredInventory (see https://github.com/AngleWyrm/Colonies/blob/master/anglewyrm/src/EntityLumberjack.java, line 25)
• The maintenance of all desiredInventory items is handled by EntityAIMaintainInventoryLevels (see https://github.com/AngleWyrm/Colonies/blob/master/anglewyrm/src/EntityAIMaintainInventoryLevels.java )

For example, the lumberjack currently picks up 2 bread, 5 saplings, 2 stone axes, and 1 iron axe.from his place of employment. (Everyone uses TownHall for this purpose at the moment)