changed max-line-length to 120 in tox.ini.

Also changed a line to be 86 chars long in rendertools.py

flatland/utils/rendertools.py

@@ -68,9 +68,7 @@ class RenderTool(object):
             tbTrans = rt.RETrans.get_transitions(oTrans, visit.iDir)
             giTrans = np.where(tbTrans)[0]  # RC list of transitions
             gTransRCAg = rt.gTransRC[giTrans]
-            self.plotTrans(
-                visit.rc, gTransRCAg,
-                depth=str(visit.iDepth), color=color)
+            self.plotTrans(visit.rc, gTransRCAg, depth=str(visit.iDepth), color=color)
 
     def plotAgents(self):
         rt = self.__class__

tox.ini

@@ -6,6 +6,9 @@ python =
     3.7: py37
     3.6: py36
 
+[flake8]
+max-line-length = 120
+
 [testenv:flake8]
 basepython = python
 deps = flake8