1.0.0 -> 1.0.1
	* New Items. Rings, wands and potions.
	* Fade-in and Fade-out video-effect.
	* Flamme video-effect. Refered from Optimum Demos
	  released under the GNU General Public License.
	  See http://www.libsdl.org/projects/optimum/
	* Brushed up the codes of cave generation and object_calc_id.
	* Fixed memory leaks.