time types panic on overflow

[allan2]

When constructing time types using out-of-range values, panic occurs.
This affects most of the FromSql and ToSql implementations for time 0.2 and 0.3.

let row = client.query_one("SELECT 'infinity'::timestamp", &[])?;
let res = row.try_get::<_, time::PrimitiveDateTime>(0);  // this panics

Minimal example here --> allan2/postrgres-time-overflow

The fix is to use fallible operations like checked_add and try_from.
An infinity test like test_special_params_without_wrapper should also be added for time. ^[1].

I have a PR in the works but I will wait for #1164 and #1170 first.