Support for latest h2 version

hyper/http20/connection.py

@@ -403,7 +403,7 @@ def _connect_upgrade(self, sock):
         with self._conn as conn:
             conn.initiate_upgrade_connection()
             conn.update_settings(
-                {h2.settings.ENABLE_PUSH: int(self._enable_push)}
+                {h2.settings.SettingCodes.ENABLE_PUSH: int(self._enable_push)}
             )
         self._send_outstanding_data()
 
@@ -424,7 +424,7 @@ def _send_preamble(self):
         with self._conn as conn:
             conn.initiate_connection()
             conn.update_settings(
-                {h2.settings.ENABLE_PUSH: int(self._enable_push)}
+                {h2.settings.SettingCodes.ENABLE_PUSH: int(self._enable_push)}
             )
         self._send_outstanding_data()
 

setup.py

@@ -77,7 +77,7 @@ def run_tests(self):
         'Programming Language :: Python :: Implementation :: CPython',
     ],
     install_requires=[
-        'h2>=2.4,<3.0,!=2.5.0', 'hyperframe>=3.2,<4.0', 'rfc3986>=1.1.0,<2.0', 'brotlipy>=0.7.0,<1.0'
+        'h2>=3', 'rfc3986>=1.1.0,<2.0', 'brotlipy>=0.7.0,<1.0'
     ],
     tests_require=['pytest', 'requests', 'mock'],
     cmdclass={'test': PyTest},

test/test_hyper.py

@@ -766,7 +766,7 @@ def test_incrementing_window_after_close(self):
         # the default max frame size (16,384 bytes). That will, on the third
         # frame, trigger the processing to increment the flow control window,
         # which should then not happen.
-        f = SettingsFrame(0, settings={h2.settings.INITIAL_WINDOW_SIZE: 100})
+        f = SettingsFrame(0, settings={h2.settings.SettingCodes.INITIAL_WINDOW_SIZE: 100})
 
         c = HTTP20Connection('www.google.com')
         c._sock = DummySocket()