Release v6.0.1 (public release)

These release notes incorporate both v6.0.0, which was never released on Github,
and v6.0.1, which fixes a small issue in v6.0.0. The release notes are for v6.0.0
except where noted.

[Fixes] (v6.0.1)

• Fixed a version specification error in Makefile.PL.

[Breaking changes]

• Updated language tag format in the RPCAPI (#629)
  • Restricted language tag.
  • Language tag is set in backend.ini.
  • New languages can be added without code change.
  • RPCAPI can report supported language tags.

[Features]

• New tools for command line test (#662, #658, #652, #632,
  #628, #626, #536, #534)
• Improved log handling in RPCAPI (#653, #656, #650, #840)
• Improved log handling in testagent (#644, #612)

[Fixes]

• Updated installation instructions (#665, #663, #660, #658,
  #633, #638, #449, #620)
• Corrected MANIFEST (#657)
• Improved error handling handling RPCAPI daemon (#545, #213)
• Garbage collection testing documentation (#567, #578)
• Corrected API documentation (#647, #648)
• Updates and corrections in Translator (#655, #649, #631)
• Add Norwegian in documentation and configuration (#643)
• Clean-up (#642, #598, #597, #639, #638, #641, #193)
• Fix warning in test agent (#635, #630, #625, #607)
• Fix warning in RPCAPI (#636, #624, #634)

Details on previous releases are found in the Changes file or in the releases
page. The release has been published at CPAN. The recommended installation
path is to start with the Zonemster-Engine Installation instructions. If
Zonemaster-Backend is updated, then an upgrade of the zonemaster database
may be required. See the upgrade section in the Zonemaster-Backend main
README. For general information go to the Zonemaster README.