Remove Duplicated Dependencies and PEP 517 Support (#2173)

* Remove duplicated dependencies

* Specify setuptools as the tool for generating distribution (PEP 517)

* Add `isort` to `dev_require`

* manage all dependencies in setup.py

* Execute `make pretty`

* Set usedevelop to true (revert previous change)

tests/test_config.py

@@ -13,7 +13,7 @@ from sanic.exceptions import PyFileError
 
 @contextmanager
 def temp_path():
-    """ a simple cross platform replacement for NamedTemporaryFile """
+    """a simple cross platform replacement for NamedTemporaryFile"""
     with TemporaryDirectory() as td:
         yield Path(td, "file")
 

tests/test_logging.py

@@ -111,7 +111,7 @@ def test_logging_pass_customer_logconfig():
     ),
 )
 def test_log_connection_lost(app, debug, monkeypatch):
-    """ Should not log Connection lost exception on non debug """
+    """Should not log Connection lost exception on non debug"""
     stream = StringIO()
     error = logging.getLogger("sanic.error")
     error.addHandler(logging.StreamHandler(stream))