log intent stamp only in debug mode

• env NODE_ENV=debug npm test to see intent time stamp
• time stamp include milisec
• mergeAll([ReactClass.defaultProps, initprops, props])

const View = props => <div>hehe</div>
View.defaultProps  = {blah} // <-- 1 defaultProps
const Component = connect(blah, initprops)(View)     // <--- 2. initprops
<Component props={blah}> // <--- 3. props

piority 3>2>1