Changes
* When an exception kills the pipeline, its traceback is logged into a file. With `--show-traceback`, it would be printed on terminal as well (213a711, 48)
* Enable exclude exception from sentry submition (cccbefa, 49)
* Add thread name to logged messages by default (not in main thread) (f3d254a, 47)
* YAML read/write is now thread-safe (4fc0ec6, 45)