Make a maintenance release of vdirsyncer, fix #708

.gitignore

@@ -6,6 +6,7 @@ build
 env
 *.egg-info
 .cache
+.pytest_cache
 .eggs
 .egg
 .xprocess

.travis.yml

@@ -2,7 +2,8 @@
   "branches": {
     "only": [
       "auto",
-      "master"
+      "master",
+      "/^.*-maintenance$/"
     ]
   },
   "cache": "pip",

scripts/make_travisconf.py

@@ -17,7 +17,7 @@ cfg['git'] = {
 }
 
 cfg['branches'] = {
-    'only': ['auto', 'master']
+    'only': ['auto', 'master', '/^.*-maintenance$/']
 }
 
 cfg['install'] = """

tests/storage/__init__.py

@@ -299,7 +299,7 @@ class StorageTests(object):
 
     @given(value=st.one_of(
         st.none(),
-        printable_characters_strategy.filter(lambda x: x.strip() != x)
+        printable_characters_strategy
     ))
     def test_metadata_normalization(self, requires_metadata, s, value):
         x = s.get_meta('displayname')