Pq-sys 0.6.2

openssl usage can now be disabled with the bundled_without_openssl feature of pq-sys.
To deactivate openssl, enable it:

[dependencies]
pq-sys = { version = "0.3.0", features = ["bundled_without_openssl"]}

This disables the TLS support in libpq, so that you cannot connect to a database requiring TLS anymore.