add http2 extras

requirements.txt

@@ -14,7 +14,7 @@ certifi==2018.11.29
 cffi==1.12.3
 chardet==3.0.4
 constantly==15.1.0
-cryptography==2.7
+cryptography==2.8
 daphne==2.4.0
 Django==3.0rc1
 django-bootstrap4==1.0.1
@@ -29,7 +29,10 @@ django-yamlfield==1.0.3
 enum34==1.1.6
 feedparser==5.2.1
 future==0.17.1
+h2==3.1.1
 hiredis==1.0.1
+hpack==3.0.0
+hyperframe==5.2.0
 hyperlink==19.0.0
 idna==2.8
 incremental==17.5.0
@@ -37,6 +40,7 @@ json-rpc==1.12.1
 kombu==4.2.2.post1
 oauthlib==3.0.1
 Pillow==5.4.1
+priority==1.3.0
 psycopg2-binary==2.7.6.1
 pyaes==1.6.1
 pyasn1==0.4.8