* feat: c++ 20
* fix: c++ 20 deprecations
* fix(msvc): warnings
* chore: add changelog entry
* fix: formatting
* Update websocketpp to the `develop` branch
* Specify other template type in FlagsEnum != operator
* Remove the user of simple template ids in our websocketpp template class
Also standardizes the file a bit by using nested namespaces, using
pragma once
* fix: turn `MAGIC_MESSAGE_SUFFIX` into a `QString`
* hacky unhacky hacky const char hack
Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>