pgjdbc 13.0 will probably interfere with PostgreSQL 13.0 in a near future.
mmmm, near future, the release frequency of PostgreSQL is mostly once a year, so based on my predictions 10 ->2017, 11 ->2018, 12 ->2019, 13 ->2020. In 4 years from now, I think PgJDBC should have advanced in major version too, probably many times more that PostgreSQL so that in 2020 PgJDBC, who knows, we can be at version 15.0 or 20.0
Believe me or not, but we did have exactly the same discussion a year ago: