Backwards incompatible changes CustomHostnameSSL.Wildcard to *bool from bool (#604) Fixes Fix a potential deadlock in ListZones (#600) Improvements LoadBalancerOrigin can now set HTTP headers (#603) Allow setting client BaseURL for HTTP calls (#606) Add id, issuer, and serial_number to CustomHostnameSSL (#607) Add support for secondary DNS (#609) Add support for secondary DNS TSIG (#610) Add support for secondary DNS primaries #611