I thought the options should win since we want them to be able to do this.

```ruby
Shoes.app do
  a = arc 20, 20, 10, 10, 0, Shoes::PI
  a.style(angle1: Shoes::Pi/2)
end
```
On that note I don't like that users pass radians and then the backend changes it back to degrees. I vote that we either ditch radians altogether, or give an option for that `units: :radians`. But maybe I should stick to one thing at a time. :grin: