Version 2.7.7
 Monday, April 8, 2019
  Improvements:
   - Possible zone transaction is aborted by zone events to avoid inconsistency
  - Added log message if no persistent config DB is available during 'conf-begin'
  - Tiny building improvements
  
 
    Bugfixes:
   - Glue records under delegation are sometimes signed
  - NSEC3 not re-salted during AXFR refresh
  - Broken NSEC3 chain after adding new sub-delegations
  - Failed to sign new zone contents if added dynamically #641
  - NSEC3 opt-out signing doesn't work in some cases
  - Redundant SOA RRSIG on slave if RRSIG TTL changed on master
  - Sometimes confusing log error message for NOTIFY event
  - Failed to explicit set value 0 for submission timeout