Changelog

• Increase x509 certificate duration from 90d to 1y for webhook component certificates (#1276, @munnerz)
• Fix bug when specify certificate keyAlgorithm without an explicit keySize (#1309, @munnerz)
• Bump Go version to 1.11.5 (#1304, @munnerz)
• Fix typo in SelfSigned Issuer in webhook deployment manifests (#1294, @munnerz)
• Add webhook troubleshooting guide (#1288, @munnerz)
• Overhaul documentation and add additional content (#1279, @munnerz)
• Fix bug where --dns01-recursive-nameservers flag was not respected when looking up the zone to update for a DNS01 challenge (#1266, @munnerz)