Errors with tmux-2.4

[robin2703]

This plugin has issues with the latest version of tmux. I really like this plugin so I am staying with tmux-2.3 for now.

[thornycrackers]

One issue I've noticed right now is that code in tmux-sessionist/scripts/switch_or_loop.sh doesn't work quite right:

dismiss_session_list_page_from_view() {
	tmux send-keys C-c
}

Needs to be changed to:

dismiss_session_list_page_from_view() {
	tmux send-keys -X cancel
}

I suspect that the new send keys changes will have broken a couple other parts of the program