Not sure if I make something wrong, but I can't use the :session command. From the manual I should be able to use this command, but it's neither shown in the preview when start typine :s nor does it work to use it, it gives me Invalid command name
:session
:s
Invalid command name
:session was added in v0.11, you're probably using an older version.
I've installed v0.11 and now it works. Thanks!