Add WorkerChange interface
-rw-r--r-- 7801 boruta.go
drwxr-xr-x - cmd
drwxr-xr-x - dryad
-rw-r--r-- 942 errors.go
-rw-r--r-- 855 errors_test.go
drwxr-xr-x - matcher
drwxr-xr-x - requests
drwxr-xr-x - rpc
drwxr-xr-x - workers