• Added new DNS plugin DuckDNS. Note that due to provider limitations, this plugin can only normally be used for certs with a single name unless you workaround the limitation with custom scripting. See the usage guide for details.
• Fixed an example in Export-PAAccountKey help.
• Added code to detect 4.x configs and gracefully revert in case folks need to downgrade after upgrading to 4.x when it comes out.