Nesting compositions

[mikebaldry]

It would be more readable if you were able to do something like

on :something do
  property :blah
  # ... x100
end

instead of

property :blah, on: :something
# ... x100

Seems like I'm repeating on: :something all day long. I'd make a PR for that - if thats something you'd happily see join the code base.

[apotonick]

That's a cool idea! :beer: