v41

• catch2 adapter works with CATCH_CONFIG_PREFIX_ALL.
  thanks Christian Morales Vega

• Silenced -Wreserved-identifier from Clang "latest" (13.0.0).

• Silenced (again) the MSVC C4702 warning from the default_return<>()
  function template.

• Introduced type trompeloeil::printer as a customization point or
  formatting data to strings in reports. This has the advantage of
  allowing partial specializations. The old technique of specializing
  the function template trompeloeil::print(ostream&, const T&) still
  works.