create board

[ReiRev]

• [x] consider design
• [x] fix intersection
• [x] create board
  • [x] learn how to use grid
• [ ] test
• [ ] publish

[ReiRev]

• [x] intersection should pass gesture call back to the stone
  • [x] default should be empty stone

[ReiRev]

• [ ] learn bloc pattern
• [ ] learn dart stream
• [ ] reconsider stream name
• [ ] consider which to use, StreamSink, StremController, and so on.
• [ ] remove duplicated code and make it cleaner

[ReiRev]

• [x] learn bloc package
• [x] do tutorial
  • [x] counter
  • [x] timer
  • [ ] login
  • [ ] weather
  • [ ] todos
  • [ ] firebase
  • [ ] angular dart counter
  • [ ] github