STY: autopep8'ed new files

src/caosdb/common/state.py

 from lxml import etree
+
+
 class State:
     """State
 

unittests/test_state.py

@@ -3,6 +3,7 @@ from caosdb import State
 from caosdb.common.models import parse_xml
 from lxml import etree
 
+
 def test_state_xml():
     state = State(model="model1", name="state1")
     xml = etree.tostring(state.to_xml())
@@ -14,6 +15,7 @@ def test_state_xml():
 
     assert xml == etree.tostring(state.to_xml())
 
+
 def test_entity_xml():
     r = db.Record()
     assert r.state is None
@@ -24,4 +26,3 @@ def test_entity_xml():
 
     r = parse_xml(xml)
     assert r.state == State(model="model1", name="state1")
-