Update todo list

todo.md

@@ -1,29 +1,4 @@
 - Get familar with jison
 - git graph requires a blank line at the end. why?
 - Create a desktop client
-- Replace all `lineInterpolate` with `curve`
-
-I have the feeling that the flowchart DSL is not very readable or expressive despite it is short.
-And it is too limited for complicated requirements such as: https://github.com/knsv/mermaid/issues/592
-
-Maybe the following is better:
-
-```json
-{
-  "nodes": [
-    {
-      "name": "A"
-    }
-    {
-      "name": "B"
-    }
-  ],
-  "edges": [
-    {
-      "from": "A",
-      "to": "B",
-      "style": "dashed"
-    }
-  ]
-}
-```
+- Do the rendering in an iframe to avoid global CSS to affect rendering.