- add canonicalheader - add copyloopvar - add fatcontext - add intrange
io/ioutil
- `OPENVPN_ENCRYPTED_KEY` environment variable - `OPENVPN_ENCRYPTED_KEY_SECRETFILE` environment variable - `OPENVPN_KEY_PASSPHRASE` environment variable - `OPENVPN_KEY_PASSPHRASE_SECRETFILE` environment variable - `PREMIUM_ONLY` environment variable - OpenVPN user and password not required for vpnsecure provider