run black over stubs, add checking to travis

django-stubs-generated/views/decorators/cache.pyi

@@ -1,11 +1,5 @@
 from typing import Any, Callable, Optional
 
-
-def cache_page(
-    timeout: float,
-    *,
-    cache: Optional[Any] = ...,
-    key_prefix: Optional[Any] = ...
-) -> Callable: ...
+def cache_page(timeout: float, *, cache: Optional[Any] = ..., key_prefix: Optional[Any] = ...) -> Callable: ...
 def cache_control(**kwargs: Any) -> Callable: ...
 def never_cache(view_func: Callable) -> Callable: ...

django-stubs-generated/views/decorators/clickjacking.pyi

@@ -1,6 +1,5 @@
 from typing import Any, Callable, Optional
 
-
 def xframe_options_deny(view_func: Callable) -> Callable: ...
 def xframe_options_sameorigin(view_func: Callable) -> Callable: ...
 def xframe_options_exempt(view_func: Callable) -> Callable: ...

django-stubs-generated/views/decorators/csrf.pyi

@@ -10,13 +10,7 @@ requires_csrf_token: Any
 
 class _EnsureCsrfCookie(CsrfViewMiddleware):
     get_response: None
-    def process_view(
-        self,
-        request: Any,
-        callback: Any,
-        callback_args: Any,
-        callback_kwargs: Any,
-    ): ...
+    def process_view(self, request: Any, callback: Any, callback_args: Any, callback_kwargs: Any): ...
 
 ensure_csrf_cookie: Any
 

django-stubs-generated/views/decorators/debug.pyi

@@ -1,5 +1,4 @@
 from typing import Any, Callable, Optional
 
-
 def sensitive_variables(*variables: Any) -> Callable: ...
 def sensitive_post_parameters(*parameters: Any) -> Callable: ...

django-stubs-generated/views/decorators/http.pyi

@@ -8,9 +8,6 @@ require_GET: Any
 require_POST: Any
 require_safe: Any
 
-def condition(
-    etag_func: Optional[Callable] = ...,
-    last_modified_func: Optional[Callable] = ...,
-) -> Callable: ...
+def condition(etag_func: Optional[Callable] = ..., last_modified_func: Optional[Callable] = ...) -> Callable: ...
 def etag(etag_func: Callable) -> Callable: ...
 def last_modified(last_modified_func: Callable) -> Callable: ...

django-stubs-generated/views/decorators/vary.pyi

@@ -1,5 +1,4 @@
 from typing import Any, Callable, Optional
 
-
 def vary_on_headers(*headers: Any) -> Callable: ...
 def vary_on_cookie(func: Callable) -> Callable: ...