Dev switch option

[tianzhich]

1. Mark babel-loader as dependency for non-babel users.
2. Use babel-loader@7.1.5 to avoid some errors.
3. Add canSwitch option.

closes #46

[Kikobeats]

why babel-loader as dependency is necessary? 🤔

[tianzhich]

According to storybookjs/storybook#4116, babel-loader is peerDependencies of @storybook/react.
So project using storybook should mark it as dependency.😁

[Kikobeats]

What do you think about to take this an opportunity to expose an inversion of control?
https://kentcdodds.com/blog/inversion-of-control

Thinking this is a very specific case and we are just adding much code there

[tianzhich]

Do you have any ideas here?

Cause react-clap-button is not a fully-controlled component, the count and countTotal change depends on internal state.
I think it could be fully controlled if we passed the count, or countTotal similarly. And the count could be defaultCount accordingly. So increase shows +1 and decrease shows -1.

Then users can implement switch effect if they want.

[auspham]

please change the hard-coded count +1.

What if there is the case where synchronization is used to make a real-time update for the clapCountText?

If that so we have to compare the current count with the previous count, cannot just depend on isClicked