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* Automatically convert envs to string, but make sure params are preserved by nuwang (PR 73)
* Fix indentation by bernt-matthias in (PR 76)
* Convert env to a list compatible with Galaxy job conf by natefoo in (PR 79)
* Fix missing app.config.is_set() in mock config for dry-run by natefoo in (PR 80)
* Refactor and fix dryrun by nuwang in (PR 82)
* Add initializer to handle empty sequence when reducing by nuwang in (PR 84)