Parametrize paths (tmux 3.2/3+?), add navigation toggle #4
  Add this suggestion to a batch that can be applied as a single commit.
  This suggestion is invalid because no changes were made to the code.
  Suggestions cannot be applied while the pull request is closed.
  Suggestions cannot be applied while viewing a subset of changes.
  Only one suggestion per line can be applied in a batch.
  Add this suggestion to a batch that can be applied as a single commit.
  Applying suggestions on deleted lines is not supported.
  You must change the existing code in this line in order to create a valid suggestion.
  Outdated suggestions cannot be applied.
  This suggestion has been applied or marked resolved.
  Suggestions cannot be applied from pending reviews.
  Suggestions cannot be applied on multi-line comments.
  Suggestions cannot be applied while the pull request is queued to merge.
  Suggestion cannot be applied right now. Please check back later.
  
    
  
    
This PR enables using nested-tmux without hardcoded paths, once the two patches in tmux/tmux#2638 and tmux/tmux#2637 land in upstream tmux.
It also makes the state machine more complicated, by allowing you to toggle the
M-arrownavigation and the prefix withM-c(the binding is arbitrary).With this, you can now easily test nested-tmux with a command like
tmux -f plugin.conf -L test.(Yes, I really should have used multiple commits for this.)