[Haskelldb-users] HaskellDB v1.0 upgrade guide

[Justin B. <jgb...@gm...>]

I've checked in a file named "UPGRADE" to the repo. It lists all the
breaking changes between haskelldb v0.12 and the upcoming v1.0
version. The repo isn't its final home but for now it will serve.
Feedback and/or patches welcome!

Justin