gregtwallace Minor fixes. Added Add ability to specify different provider(s) for subdomains. This allows provider A to service example.com but use provider B for sub.example.com. Fixed Fix nil deref during automatic backup of app prior to config file version upgrade. Fix mismatch of domain to provider in case where domains have overlapping names (e.g. testexample.com would have matched to example.com). Several possible CVEs addressed via dependency updates and Go version update to 1.21.5.
