Safari support

[AmyFiori]

I'll admit I haven't tried to download and use the latest version of this project on GitHub, but I just looked at the example linked to by NPM (NPM page: https://www.npmjs.com/package/json-view, example page: https://richard-livingston.github.io/json-view/).

In Chrome, the example page seemed to work perfectly, but in Safari, I could not edit any of the entries. Double-clicking them caused what looked like a text box to appear around them, but I could not type in the text box. I checked the inspector and the div containing the entry text had contentEditable set to true, so it seems to me like it SHOULD have been editable, but it was not. I was using Safari Version 12.1.1 (14607.2.6.1.1).

Have you had other users unable to edit entries using the example page, or the actual package, in Safari?