Enhancement Request: Auto-save session

[BrutuZ]

An option to auto-save sessions when closing the application.
I usually keep track of the same files, so manually creating a session and linking the xml file to the shortcut was a good-enough solution. However sometimes I miss the ability to return to the last open tab when opening SnakeTail. Creating\updating the session file involves too many steps (there's no shortcut available) every time I want to make a tab open by default or update the keywords to highlight.

[NiclasOlofsson]

Instead of forcing sessions on the users (even though i like that concept too) a simple return to same-state-as-when-i-closed would be all that most people need.