Thanks for the info and thanks for source maps! I wrote the article. I'm updating to clarify that I meant that "version 3 was released in 2011" instead of readi

Thanks for the info and thanks for source maps! I wrote the article. I'm updating to clarify that I meant that "version 3 was released in 2011" instead of reading as though the original version of source maps came out in 2011. Also I'm linking back to your comment for an explanation on the whole "google docs" backstory, which is pretty fascinating. Thanks again!