1.23.0

Bug Fixes

• avoid the new webpush validation in these tests (#781) (5266bb71)

Features

• allow log_check/status/health API calls w/out certs (#783) (34dc8842)
• add cache-control header to 410's (#773) (2d386b8a, closes #770)
• log the python version in client_info (#778) (876c3825)
• Typos in docs (#782) (7b25baee)
• update docs and clarify error messages (#779) (37689b33)
• move preflight logic into webpush validation (#772) (d963d181, closes #765)
• Add request timing w/validation breakdown. (b2a491cd, closes #758)
• add a --proxy_protocol for the partner endpoint (f482e64d)