[IMP] component: support dynamic t-props

It is useful in some rare situations.

closes #144

tests/store/connected_component.test.ts

@@ -573,7 +573,6 @@ describe("connecting a component to store", () => {
       }
     }
 
-
     const state = { current: "a", msg: { a: "a", b: "b" } };
     const actions = {
       setCurrent({ state }, c) {
@@ -627,7 +626,6 @@ describe("connecting a component to store", () => {
       }
     }
 
-
     const state = { someId: 1, flag: true, messages: { 1: "abc" } };
     const actions = {
       setFlagToFalse({ state }) {
@@ -714,7 +712,6 @@ describe("connecting a component to store", () => {
       }
     }
 
-
     (<any>env).store = store;
     const app = new TodoApp(env);