Table containing an array column always register modification changes between start point and endpoint #325

Hi @VanRoy,

I've encountered an issue when tracking the database changes using AssertDbConnection#changes when the table has an array type column such as in the example below:

create table my_table
(
    id         uuid not null primary key,
    array_prop varchar[]
);

From what I've gathered, as we register array_prop as an object here, comparison will be done by the equals method (from here). In my case the object is a PgArray and as the `equals is not overridden, a change is always detected.

I've started working on a fix which you can see here. Do you think you could give me some feedback to be sure I'm on the right track ?

Cheers,