Alexander-Miller/treemacs@10c96c9 -> Alexander-Miller/treemacs@5c01829
The new treemacs-add-and-display-current-project command does what the
old +treemacs/toggle did, now we just need +treemacs/toggle to
do-what-I-mean with respect to projects (if not in a project,
treemacs-add-and-display-current-project unhelpfully aborts with an
error).