Add support for readOnly prop

[callmeberzerker]

Fixes [#201].

[thibaudcolas]

Thank you @SpearThruster, that was fast 😄 and is looking reeeally close. I’d like the implementation to be slightly different, basically not relying on local state to switch the editor to "readOnly" mode if the prop is used. I think this will make the behavior of this prop more predictable.

Thank you for adding tests as well 🙂I think I’ll also want to add an example of this in Storybook somewhere, but I’m happy to do this myself when merging the changes.

[callmeberzerker]

Hi @thibaudcolas

Thanks for the feedback... I updated the code according to your remarks... Will do some npm linking and testing during the next days.

When you are OK with the implementation I will also rebase against master. 👍

Thanks!

[thibaudcolas]

Thank you @SpearThruster, this is looking top notch! I spotted a few minor things but I’ll address them while merging.

[thibaudcolas]

Merged! 🙂 I’ll be releasing this as part of v1.3.0. I’ll try to get a few more improvements in and release it towards the end of this week.

[callmeberzerker]

Awesome, thanks a lot! :)