+ Rewrite projectile integration.
+ Fix per-frame workspaces not cleaning up after itself when an
frame-associated workspace (or its frame) is destroyed.
+ Alias +workspace-p to perspective-p instead of persp-p (which isn't as
accurate, because it counts nil as a valid perspective).
+ Extract orphaned-buffer list functionality in +workspace-buffer-list
into seperate function: +workspace-orphaned-buffer-list.
+ Allow toggle-debug-on-error to catch workspace errors.
+ Remove +workspace/kill-session-and-quit (never used)
+ Ensure persp-mode is loaded as late as possible.
