use new Entity API

[benbriggs]

Fixes #38

First real pass at getting this working without using Entity.create. Essentially an emptyContentState is created before conversion begins, and a function is passed down to be called on the result of textToEntity or htmlToEntity to create an entity on that contentState. Those *ToEntity methods now return an object of shape {type, mutability, data}.

An alternative that I thought of while writing this was to instead pass that function as an additional argument to the*ToEntity functions themselves so that they can return with the string result of an Entity.create-like function like before. This would also make it easier for users to track down issues if there were an exception when creating the entity since it would be called from their own code at some point.

[neurosnap]

Thanks for trying to get draft-js 0.10 working! What is the current status of this PR?

[0rvar]

This looks good to me. I'll try migrating to this branch next week and report back how it worked out.

[0rvar]

Finally had time to try this out. These changes work very well with my entities. 👍

[cedricmessiant]

Good job ! Could someone merge this ?

[benbriggs]

sorry for the wait, published in draft-convert@2.0.0!

For posterity, I ended up switching to the alternative mentioned in the original PR - textToEntity and htmlToEntity now receive functions as arguments to create/get/manipulate entities. The docs have been updated with the new arguments.

[cedricmessiant]

Thanks !

[optimatex]

@benbriggs thank you, Ban, for making the draft-convert fresh and reliable

[KyoungWan]

thanks!