add animation

examples/animation.lisp

@@ -0,0 +1,10 @@
+; animation
+; click Project > Toggle Animation
+
+(
+(def t (sin (div (time) 100)))
+
+(def pos (add 200 (mul 30 t)))
+(def square (lambda (a) (rect (add 200 a) a a a)))
+(stroke (square pos) 1 "red")
+)