Cleaned up CHANGELOG.rst to make backwards incompatible changes easy …

…to find

CHANGELOG.rst

@@ -2,13 +2,19 @@
 -----
 Date: 12.26.2020
 
+Backwards Incompatible
+^^^^^^^^^^^^^^^^^^^^^^
+- RPyC 5.0.0 cannot teleport functions to earlier versions
+- Deprecated Python 2 support to coincide with it's EOL
+
+Improvements
+^^^^^^^^^^^^
 - Server hostname default supports IPv4 and IPv6 by using the wildcard address `#425`_
-- Added docker/docker-compose.yml for Python 3.6, 3.7, 3.8, 3.9, and 3.10 containers to improve local workflow
-- Fixed pickle failure on windows for connect_multiprocess and connect_thread `#412`_
+- Added ``docker/docker-compose.yml`` for Python 3.6, 3.7, 3.8, 3.9, and 3.10 containers to improve local workflow
+- Fixed pickle failure on windows for ``connect_multiprocess`` and ``connect_thread`` `#412`_
 - Fixed teleport function behavior for keyword-only arguments with default `#422`_
 - Improved documentation on custom exception handling
 - Fixed IPv6 support for server `#407`_
-- Dropped Python 2 support since it has reached EOL
 - Added a simple asynchrounous service example `#400`_
 
 .. _#425: https://github.com/tomerfiliba-org/rpyc/issues/425