Book fully updated for 1.2

Yesterday I said that the Yesod book was almost fully updated for version 1.2, and that I'd let everyone know when it was completely updated. Turns out that the last chapter took far less time to update than I'd expected. So I'm happy to announce that the Yesod book is now fully revised and up-to-date with version 1.2 of Yesod. The final chapter on using Sphinx is now available, and benefitted greatly from the simplified streaming data primitives introduced in Yesod 1.2.