Changes

* Some items require certain conditions to be improved. For example, [[smithing]] items need to be [[glowing hot]] to improve. Also, most items need to be at 0 [[damage]] (repaired[[repair]]ed) to be improved, except [[wood fence]]s, [[wood gate]]s, and [[stone wall]]s. * Some items cannot be improved and will reflect that when the [[examine ]] command gives no information for improvement: [[newbie]] [[starter kit]] tools, most building materials ([[dirt]], [[plank]]s, etc), [[yoyo]], [[raw materials]] (but can be [[combine]]d with higher [[quality]] material to improve (at the expense of the higher quality material), [[repair|unrepairable items]], etc.* [[Unfinished item]]s can't be improved until finished. The <tt>improve</tt> [[keybind]] won't work on them.