If you have questions, please ask!  Using Arc in real applications has been such an interesting experience that I can barely shut up about how ridiculously fun it is.<p>Here are some unfinished notes about what the diffs mean:  <a href="https:&#x2F;&#x2F;gist.github.com&#x2F;laarc&#x2F;a07799e89940dc7c31c9" rel="nofollow">https:&#x2F;&#x2F;gist.github.com&#x2F;laarc&#x2F;a07799e89940dc7c31c9</a>  It&#x27;s interesting how short the diffs are vs how many features and fixes they deliver.