One of the big things on my list was making creating addons easier. There should really be a create new addon option and you're done.
So the addon manager was born. This operates a lot like
Github Desktop in terms of switching between and creating new stuff.
attribute 'contenteditable' not allowedattribute 'blocktype' not allowed
As you see above, you can do everything you would expect to be able to do here.
Creating a new addon brings up this dialog.
attribute 'contenteditable' not allowedattribute 'blocktype' not allowed
When creating a new game or map it'll give you a minimal template that is enough to get you started doing what you're doing.
All this stuff is just at the stage where it's functional enough to be cleaned up and expanded on, so I'd expect things to get a bit friendlier, and template choices etc.