Yesod 0.10
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* Replace lift with liftHandler and liftWidget
* No more GGHandler or GGWidget
* No more liftIOHandler
* Enumerators are gone, in come conduits, now you can catch exceptions!
* Move from pool to resource-pool
* Rework of the redirect system
* Configure database parameters via environment variables.
* Fully reworked routing, much more efficient.
* Cleaned up EntityDef, making it more resilient to renamings.