Fixed style issues.

gms_preprocessing/__init__.py

@@ -8,9 +8,9 @@ from . import algorithms  # noqa: E402
 from . import io  # noqa: E402
 from . import misc  # noqa: E402
 from . import processing  # noqa: E402
-from . import options  # noqa: E402
-from .options import config  # noqa: E402
-from .options.config import set_config  # noqa: E402
+from . import options  # noqa: F401 (imported but unused)
+from .options import config  # noqa: F401 (imported but unused)
+from .options.config import set_config  # noqa: F401 (imported but unused)
 from .processing.process_controller import process_controller  # noqa: E402
 
 __author__ = """Daniel Scheffler"""
@@ -21,7 +21,7 @@ __all__ = ['algorithms',
            'io',
            'misc',
            'processing',
-           'config'  # only to keep compatibility with HU-INF codes 
+           'config'  # only to keep compatibility with HU-INF codes
            'options',
            'set_config',
            'process_controller',