Timberjack

Adds a custom falling entity, this allows various improvements:

• Fixes the vanilla death timer bug on the entity. There should be no more floating entities left behind.
• Tweak momentum values such that the tree falls approximately in away from the player. 10% chance of random direction.
• Falling logs now destroy leaves and plants under them as they fall. Leaves also destroy plants.
• When the entity can't place the block, it now properly spawns leaf drops.
• Logs now drop 1-4 sticks instead of logs when the entity can't place the block. No more cheesing with slabs.
• Logs now rotate in approximately the correct direction upon hitting the ground. May not work with all mod logs.
• Properly trigger leaf decay checks after placing blocks.

Added an aggressive house protection mode:

• Any blocks normally not found near trees will abort the felling process.
• These blocks include: Glass, Workbenchs, Carpet, Anvils, Doors, Trap Doors, Signs, Beds, Repeaters, Comparators.
• Can be disabled in the config, defaults to on.

Also:

• Fixed a couple of issues with the chat commands.
• Sneaking prevents felling. Can be turned off in config.
• Added some code to clean up the old entities.