v2.2.9 Boost 1.85 release

v2.2.9 15th April 2024 (Boost 1.85) [release]

Enhancements:

#293

• Some users wished that Outcome would be clean with -Wpedantic, this is now turned on for
  the test suite.

#294

• All use of assert() has been replaced with OUTCOME_ASSERT, which can be user overridden
  at compile time.

#295

• In git commit 12b14e1 (Aug 11 2022) status code had its
  paths changed due to its headers not previously having the right path convention. It was not
  realised at the time that in Boost.Outcome this resulted in
  <boost/outcome/experimental/status-code/status-code/headers.hpp> which is not desirable.
  This has now been remedied to remove the double status-code, which will obviously break
  any Boost.Outcome code which relies on the double status-code. Standalone Outcome is unaffected.

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Use the 'all-sources' tarball below, NOT the github generated one which is missing dependencies: