Drop pcre-light dependency by implementing formatMany's parser by hand
Also, add very trivial test for executeMany (does not cover interesting parsing cases).
The problem is that rounding up can create the need for some complicated date-time manipulations. So instead we send all the digits we have to PostgreSQL.
Need to implement fast ToField instances
Add test for LISTEN/NOTIFY
Also, rearrange Main.hs so test module imports and tests :: [TestEnv -> Test] are next to each other.
…o each test
…les will have less to import