Release 2.1.0

[rockowitz]

Highlights of release 2.1.0:

• Improved initialization performance
• Dynamic sleep improvement
• Cross-instance locking
• Shared library libddcutil is backwardly compatible with the one in ddcutil 2.0.0 The SONAME is unchanged as libddcutil.so.5. The release library file is libddcutil.5.1.0
• libddcutil watches for display connection and DPMS state changes and notifies clients.
• Improved control of initialization messages

Detailed information about the changes can be found in file CHANGELOG.md, and on the ddcutil web site.

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This discussion was created from the release Release 2.1.0.