api.toJSON() and api.fromJSON() should be be renamed, as they use JS Objects and not JSON.

[brochington]

Currently the api.toJSON() and api.fromJSON() methods act upon deserialized object representations of the layout (JS Objects). This can lead to some confusion, as it's not technically JSON that they are using.

There is nothing wrong with the api methods taking JS objects, but I do feel like they should be renamed to reflect what is actually happening, perhaps something like api.saveLayout() and api.loadLayout().