safe_psql() method returns byte string

[gsmolk]

Previously it was returning text, so now you have to manually decode it.

[arssher]

Well, I don't see Popen call being changed in the last two years neither previously existed decode(). At which commit/version you saw the previous behaviour?

At least pathman tests rely on bytes returned in several places, so should be new method (or argument) at this point anyway.