New feature

• Add command line parameter and advanced mode option to choose the Common Name for a certificate, thanks @georg-jung

Enhancements

• Add new command line parameter and backing field for the FTP installer, so that a single renewal can be used to install certificates to both FTP and Web, thanks @ptsoccer
• Add example script for SSTP, thanks @filthyfreak
• Update NuGet packages
  • Microsoft.Web.Administration from 11.0 to 11.1
  • WebDAVClient from 1.1.2 to 1.1.3
  • TaskScheduler from 2.6.5 to 2.8.1
  • Serilog from 2.5.0 to 2.6.0
  • Newtonsoft.Json from 10.0.3 to 11.0.2
  • Nager.PublicSuffix from 1.1.0 to 1.2.0
  • Autofac from 4.6.2 to 4.8.1
  • BouncyCastle from 1.8.1 to 1.8.2
  • CommandLineParser from 2.1.1-beta to 2.2.1
  • Various Microsoft .NET libraries
• Removed superfluous packages to reduce package size, thanks @georg-jung
• Add specific error about wildcard support not being available yet (#464)
• Improved phrasing for certificates that are not due for renewal yet ("not scheduled" can make people worry that something is wrong/missing).

Bug fixes

• Prevent misconfigured IIS sites from bringing down the program (#785)
• Prevent running into PathTooLongException on long lists of sites (#854)