layer in dstpos is split.
the function prod() which make product of elements is added.
version 0.1.2 / add enemies.
isEqual(), pushUniquely() is added.
layer in dstpos is split.
Enemies' motion is implemented.
version 0.1.5/ Animation of Sprite is implemented.
player's attack is implemented.
version 0.1.7/name is changed into 48D-HACK / enemies' attack and game over is implemented./ css for actual pixel
version 2.0 / recover HP with siphone is implemented.
Change site design / change player and background graphic / logo and snapshot is updated.