Log Message:
py-babel: updated to 2.8.0

Version 2.8.0

Improvements
* CLDR: Upgrade to CLDR 36.0
* Messages: Don't even open files with the "ignore" extraction method

Bugfixes
* Numbers: Fix formatting very small decimals when quantization is disabled
* Messages: Attempt to sort all messages

Docs
* Add years to changelog
* Note that installation requires pytz