Added

• Tree felling. Logs of every wood and stem type work like ores: break one and the whole tree comes down. trees.merge-wood-variants treats log, stripped log and wood of one species as one tree, trees.break-leaves also takes the leaves hanging on it (they never cost durability), trees.max-leaves limits how many. Only axes trigger it by default. A fresh config contains the log entries under ore-tool-map. An existing config needs them copied over from the new default file, since that map is yours.
• durability.max-per-vein: the most durability one vein may use up. 0 means no limit.
• durability.stop-before-break (on by default): the vein stops before the tool would break, so the tool survives with one point left.