QuickStart: use Stackage Server
Updated quickstart
blog post on persistent 2
try to fix markdown formatting bug
fix links
typos
Added some info on custom monad typeclass instances
Fix bad XML
New example: visitor counter
Single process pub/sub
New example: environment variables
Update WAI chapter for version 3.0
Draft blog post
Route attributes example added
Update installation info in the book
Clarification on hash and QS
Example of toWidgetHead/toWidgetBody
Explanation of new routing system for @meteficha
Post-dated publishing of Yesod 1.4 post

Last call to @gregwebs to change the text.
env variables and config files