v7.0.1

Features

• Added optional use of memcached for caching timestamp requests - config option timestamp.memcache
• Added optional rate limiting of timestamp requests - config options timestamp.ratelimit and timestamp.rateburst
• Improved behavior of the /health endpoint
• The /directory API is now always available even if server.siblings is not configured

Bug Fixes

• audit: fix missing perf.elapsed.ms and formatting of empty client.dn

API Changes

• The Timestamper interface has been changed to a single method with an options struct and moved to lib/pkcs9
• Many functions in the Go API now take a context.Context as the first argument. This enables cancellation of long-running timestamp requests.