LMDB-based very high performance backend
AXFR in: don't accept zones with a mixture of Opt-Out NSEC3 RRs and non-Opt-Out NSEC3 RRs
API: Replace PATCH zone/rrset API with PATCH zone

PATCH zone updates multiple RRsets at once (and in one transaction).
regression-tests.api: allow extra args in create_zone()
API: merge domain manipulation from create and update

Remove code duplication.
API: correctly use lowercase compare for zone name
Add new SOA-EDIT-API SOA editing setting

This triggers whenever a record is changed through the API.
remove unused wilcard queries
Merge pull request #1357 from mind04/unused

remove unused wilcard queries
Merge pull request #1352 from mind04/mixed

AXFR in: don't accept zones with a mixture of Opt-Out NSEC3 RRs and non-...
Merge pull request #1354 from zeha/api-consolidate-zone-update

API: Consolidate zone update plus SOA-EDIT-API
Remove duplicate type in pg schema upgrade script

Spotted by azlev.
Merge pull request #1358 from zeha/patch-1

Remove duplicate type in pg schema upgrade script
add little comment to guard against overly simple fix for slow qsize-q metric
implement DNAME. Probably some rough edges.
document DNAME flag
also enable DNAME during oracle testing
also enable DNAME during goracle testing
gmysql schema update improvements
gpgsql schema update improvements