Bump to v20.12 (#1987)

* Bump to v20.12

* Update Changelog

CHANGELOG.rst

@@ -1,3 +1,90 @@
+Version 20.12.0
+===============
+
+Features
+********
+
+  *
+    `#1945 <https://github.com/huge-success/sanic/pull/1945>`_
+    Static route more verbose if file not found
+
+  *
+    `#1954 <https://github.com/huge-success/sanic/pull/1954>`_
+    Fix static routes registration on a blueprint
+
+  *
+    `#1961 <https://github.com/huge-success/sanic/pull/1961>`_
+    Add Python 3.9 support
+
+  *
+    `#1962 <https://github.com/huge-success/sanic/pull/1962>`_
+    Sanic CLI upgrade
+
+  *
+    `#1967 <https://github.com/huge-success/sanic/pull/1967>`_
+    Update aiofile version requirements
+
+  *
+    `#1969 <https://github.com/huge-success/sanic/pull/1969>`_
+    Update multidict version requirements
+
+  *
+    `#1970 <https://github.com/huge-success/sanic/pull/1970>`_
+    Add py.typed file
+
+  *
+    `#1972 <https://github.com/huge-success/sanic/pull/1972>`_
+    Speed optimization in request handler
+
+  *
+    `#1979 <https://github.com/huge-success/sanic/pull/1979>`_
+    Add app registry and Sanic class level app retrieval
+
+Bugfixes
+********
+
+  *
+    `#1965 <https://github.com/huge-success/sanic/pull/1965>`_
+    Fix Chunked Transport-Encoding in ASGI streaming response
+
+Deprecations and Removals
+*************************
+
+  *
+    `#1981 <https://github.com/huge-success/sanic/pull/1981>`_
+    Cleanup and remove deprecated code
+
+Developer infrastructure
+************************
+
+  *
+    `#1956 <https://github.com/huge-success/sanic/pull/1956>`_
+    Fix load module test
+
+  *
+    `#1973 <https://github.com/huge-success/sanic/pull/1973>`_
+    Transition Travis from .org to .com
+
+  *
+    `#1986 <https://github.com/huge-success/sanic/pull/1986>`_
+    Update tox requirements
+
+Improved Documentation
+**********************
+
+  *
+    `#1951 <https://github.com/huge-success/sanic/pull/1951>`_
+    Documentation improvements
+
+  *
+    `#1983 <https://github.com/huge-success/sanic/pull/1983>`_
+    Remove duplicate contents in testing.rst
+
+  *
+    `#1984 <https://github.com/huge-success/sanic/pull/1984>`_
+    Fix typo in routing.rst
+
+
 Version 20.9.1
 ===============
 

sanic/__version__.py

@@ -1 +1 @@
-__version__ = "20.9.1"
+__version__ = "20.12.0"