Array slicing. Closes #2.

tests/all.test

@@ -166,6 +166,25 @@ null
 2
 3
 
+#
+# Slices
+#
+
+[.[3:2], .[-5:4], .[:-2], .[-2:]]
+[0,1,2,3,4,5,6]
+[[], [2,3], [0,1,2,3,4], [5,6]]
+
+del(.[2:4],.[0],.[-2:])
+[0,1,2,3,4,5,6,7]
+[1,4,5]
+
+.[2:4] = ([], ["a","b"], ["a","b","c"])
+[0,1,2,3,4,5,6,7]
+[0,1,4,5,6,7]
+[0,1,"a","b",4,5,6,7]
+[0,1,"a","b","c",4,5,6,7]
+
+
 #
 # Variables
 #