Treecapitator

This mod REQUIRES bspkrsCore to be installed as well: http://minecraft.curseforge.com/mc-mods/bspkrscore

Features:

• Can break any properly coded log out of the box (see .minecraft/config/TreeCapitator.cfg for details)
• Sneak while chopping to break logs normally (configurable)
• Configurable list of tool IDs to determine what an "axe" is
• optional item damage based on number of logs broken (defaults to enabled)
• optional increasing item damage per block broken (off by default)
• Smart tree-detection (configurable)
• option to destroy leaves (enabled by default)
• option to shear leaves (with a shear-type item in hotbar)
• option to shear vines (with a shear-type item in hotbar)
• disable drops in creative
• disable tool requirement
• mod version checking (never miss a new feature)

Some notes on how it works:
Tree Detection

• Trees are determined by looking at the number of leaf blocks that neighbor the top block of a vertical column of logs.
• If the top block has 3 or more neighboring leaf blocks the code considers that column of logs to be a tree.
• If the top block does not have 3 neighboring leaf blocks the code will default to normal block breaking.
  Item Damage
• Axes and Shears that have the Unbreaking enchantment will work the way they are supposed to.
• Damage is applied to the item as each block is broken in the chain.
• The allowMoreBlocksThanDamage setting should be self-explanitory, but basically it means that if it is set to false and your item breaks in the middle of chopping down a tree, the remaining blocks will not be broken.
• The code will not search for other axes in your hotbar to apply damage to if your current axe breaks.
• If you have multiple "shear-type" items in your hotbar, the code will always apply damage to the left-most item.
  Destroying Leaves/Vines
• Shearing vines doesn't get every vine It seems to favor vines hanging on the Western face of the tree.
• The destroyLeaves setting MUST be set to true in order for shearLeaves or shearVines to work.
• The shearLeaves and shearVines settings can be enabled independently of each other.
• Yes, sometimes a few leaf blocks are left behind after chopping a tree, but they will decay normally.