Add WebPush support for Safari (#674)

* Add WebPush support for Safari

* Update webpush.py based on review

Declare results variable at the start of the block

* Fix typo in warning

Co-authored-by: Cuyler Stuwe <salembeats@gmail.com>

* Update README.rst

Co-authored-by: James Bligh <618250+blighj@users.noreply.github.com>

* Fix mailto: space

* Expanded documentation for Web Push (#558)

• Added example code to register WP device
• Fixed issue where call to extract UserAgent didn't include UA
• Added examples on how to send a Web Push message

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Attempt to fix tests

* Update README.rst

---------

Co-authored-by: James Bligh <james.bligh@silvercloudhealth.com>
Co-authored-by: Cuyler Stuwe <salembeats@gmail.com>
Co-authored-by: Éloi Rivard <eloi.rivard@nubla.fr>
Co-authored-by: Neil Littlejohns <n.littlejohns@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

setup.cfg

@@ -37,7 +37,6 @@ setup_requires =
 APNS =
 	apns2>=0.3.0
 	importlib-metadata;python_version < "3.8"
-	pywebpush>=1.3.0
 	Django>=2.2
 
 WP = pywebpush>=1.3.0

tests/test_rest_framework.py

@@ -55,7 +55,7 @@ def test_validation(self):
 
 		# valid data - 200 bytes mixed case
 		serializer = APNSDeviceSerializer(data={
-			"registration_id": "aE" * 200,
+			"registration_id": "aE" * 100,
 			"name": "Apple iPhone 6+",
 			"device_id": "ffffffffffffffffffffffffffffffff",
 		})