rewritten diff algorithm

tests/lists.nim

@@ -0,0 +1,18 @@
+import vdom, kdom, vstyles, karax, karaxdsl, jdict, jstrutils
+
+var contents: seq[cstring] = @[]
+
+proc onTodoEnter(e: Event; n: VNode) =
+  contents.insert(n.value & "BBBB")
+  contents.insert(n.value)
+  n.value = ""
+
+proc createDom(): VNode =
+  result = buildHtml(tdiv):
+    input(class = "new-todo", placeholder="What needs to be done?", name = "newTodo",
+          onkeyupenter = onTodoEnter, setFocus)
+    for c in contents:
+      tdiv:
+        text c
+
+setRenderer createDom