I've set `lexical-binding` to `nil` in all Emacs Lisp files to suppress
the warnings introduced in Emacs 31 requiring all elisp files to have a
`lexical-binding` comment.
This retains the default behavior of dynamic binding when no
`lexical-binding` comment is present. With it set to `t` across the
board, various things break, and fixing those is a task for another day.
It seems easysession is a more modern take on session management, and
most importantly, it is much faster than desktop.el. So far this seems
to work fine, so I'll give it a proper try.
