Enhancements

#1659 - The --webroot argument can now be used to override the path read from an IIS target, suggested @Vershner
#1651 - Outgoing http requests now include a user-agent header, contributed by @monomosc
#1668 - grantemsley contributed an example script that updates the Azure AD Application Proxy
Log/print 64b or 32b builds at startup, along with the version information
More specific error messages for InvalidOperationExceptions
When a renewal fails, the exit code for the scheduled task no longer indicates success

Bug fixes

#1661 - The Digital Ocean plugin was missing RestSharp.dll in its package, thanks @viktor2097 for the report.
#1665 - Fix crash when the program is unable to place an order for whichever reason (e.g. invalid nonce, rate limit, etc.).
#1669 - Fix logic bug where folders are not cleaned up properly, thanks @Franciscorp
#1657 - Fix bug in DNS script validation reported by @belope
A validation failure would not be considered fatal in all cases, causing the program to unnecessarily try to continue