I'm happy for people to post public links
Merge pull request #67 from hesselink/implement-offset

Implement offset
Depend on haskelldb 2.2.3.0.0.0.1
Update README to say to use the opaleye branch of tomjaguarpaw/haskelldb
Add details about how type families could aid instance resolution
The OFFSET patch has already been merged.
Note that the instance resolution idea was inspired by Adam Bergmark
Add Default type families project to TODO.md
Change Examples.lhs to say to use the version of haskelldb mentioned in the README.
It's not a markdown file, so I'll get rid of the link.
Rename sh to printSQL
Unpackspec pc boilerplate
ExprArr: add Num instance.

Makes writing where/restrict expressions much nicer.
ExprArr: lower, coalesce, cast
Add isNotNull and isNotNullExpr
disable test suites
Dubious QueryRunner instance for nested Maybes