[asterisk-announce] libpri release 1.6.1

[Asterisk Development Team]

The Asterisk Development Team would like to announce  
the release of libpri-1.6.1.

The release artifacts are available for immediate download at  
https://github.com/asterisk/libpri/releases/tag/1.6.1
and
https://downloads.asterisk.org/pub/telephony/libpri

This release resolves issues reported by the community  
and would have not been possible without your participation.

Thank You!


Change Log for Release libpri-1.6.1
========================================

Links:
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 - [Full ChangeLog](https://downloads.asterisk.org/pub/telephony/libpri/releases/ChangeLog-1.6.1.md)  
 - [GitHub Diff](https://github.com/asterisk/libpri/compare/1.6.0...1.6.1)  
 - [Tarball](https://downloads.asterisk.org/pub/telephony/libpri/libpri-1.6.1.tar.gz)  
 - [Downloads](https://downloads.asterisk.org/pub/telephony/libpri)  

Summary:
----------------------------------------

- .github: Add Releaser workflow
- Link README to README.md
- Makefile: Fix modern compiler errors.
- Makefile: Add the ability to build libpri on MacOS for Linux target.
- q931.c: Fix subaddress finding octet 4.

User Notes:
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Upgrade Notes:
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Closed Issues:
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None