The main idea behind that was to be able to do more sophisticated
merging for stuff that goes into `postgresql.conf`:
`shared_preload_libraries` is a comma-separated list in a `types.str`
and thus not mergeable. With this change, the option accepts both a
comma-separated string xor a list of strings.
This can be implemented rather quick using `coercedTo` +
freeform modules. The interface still behaves equally, but it allows to
merge declarations for this option together.
One side-effect was that I had to change the `attrsOf (oneOf ...)` part into
a submodule to allow declaring options for certain things. While at it,
I decided to move `log_line_prefix` and `port` into this structure as
well.
This is a Go program inside the sources of `postgresql_anonymizer` that
allows to perform database dumps, but with anonymized data. I figured
that it's a little awkward to have a client program to be part of the
extension package.
So I decided to create a second package called `pg-dump-anon`. Since
it's one repository, both share `version` & `src`.
Also extended the VM test to make sure we're getting properly anonymized
data when dumping with `pg_dump_anon`.
