when + not == unless
Minor refactoring
Code style
[Fix #501] Nil appearing in nrepl-server buffer name when no project directory.
Merge pull request #504 from jonpither/nil-designation

[Fix #501] Nil appearing in nrepl-server buffer name when no project dir...
Adding cider-change-buffers-designation.
Merge pull request #500 from jonpither/rename-buf

Change cider buffers designation
Fixing reference to nrepl-connection-buffer in cider-change-buffers-designation.
Merge pull request #508 from jonpither/rename-buf

Fixing reference to nrepl-connection-buffer in cider-change-buffers-designation.