Initial data commit

Task/Stack/Genie/stack.genie

@@ -0,0 +1,20 @@
+[indent=4]
+/*
+   Stack, in Genie, with GLib double ended Queues
+   valac stack.gs
+*/
+init
+    var stack = new Queue of int()
+
+    // push
+    stack.push_tail(2)
+    stack.push_tail(1)
+
+    // pop (and peek at top)
+    print stack.pop_tail().to_string()
+    print stack.peek_tail().to_string()
+
+    // empty
+    print "stack size before clear: " + stack.get_length().to_string()
+    stack.clear()
+    print "After clear, stack.is_empty(): " + stack.is_empty().to_string()