Merge branch 'master' into check_and_fix_travis_config_in_travis

Author: altendky

.travis.yml

@@ -11,18 +11,12 @@ matrix:
       env:
         - TOXENV=py36,report,codecov
     - python: '3.7'
-      dist: xenial
-      sudo: required
       env:
         - TOXENV=py37,report,codecov
     - python: '3.7'
-      dist: xenial
-      sudo: required
       env:
         - TOXENV=doc
     - python: '3.7'
-      dist: xenial
-      sudo: required
       env:
         - TOXENV=check
 before_install:

src/desert/__init__.py

@@ -41,7 +41,7 @@ def schema_class(
 
 
 def metadata(
-    field: marshmallow.fields.Field
+    field: marshmallow.fields.Field,
 ) -> t.Dict["desert._make._DesertSentinel", t.Dict[t.Any, marshmallow.fields.Field]]:
     """Specify a marshmallow field in the field metadata.