v0.2.1

• Declare your expected prop types directly in TypeScript:

  import { createComponent, createElement as h } from '@vue/composition-api'
  
  interface Props {
    msg: string
  }
  
  const MyComponent = createComponent<Props>({
    props: { 
       msg: {}  // required by vue 2 runtime
    },
    setup(props) {
      return () => h('div', props.msg)
    }
  })

• Declare ref type in TypeScript:

  const dateRef = ref<Date>(new Date);

• Fix createComponent not working with import() #81.
• Fix inject type declaration #83.