CLN: Refactored bust_ghosts for more helpful errors.
TST: Suppress plotting in nosetests.
TST: Basic feature-finding test with structure for more tests in future.
ENH: Set up benchmarks, and create a simple one for locate.
Avoid filter error on tracking.
Ran benchmarks.
Restore accidentally deleted file.
Merge remote-tracking branch 'origin/two-point' into two-point