v42

• Fixed issue #264: Sequence objects did not correctly report
  is_complete() when there were living, but satisfied, expectations
  remaining. Thank you Václav Kubernát for reporting.

• Fixed issue #259 where CMakeFiles.txt wrongly installed trompeloeil
  for projects that includes it. It is now an option. See FAQ for
  details. Thank you Ismail Pazarbasi for reporting and fixing.

• Updated Catch2 to version 2.13.7 to compile unit tests on systems
  with glibc >= 2.34.

• Fixed issue #255: Hex dumps showed byte values <= 15(dec) wrong.
  Thank you Stuart Dootson for reporting.

• Fixed issue #253: Resolve lingering warnings in early Clang compilers
  and enable -Wzero-as-null-pointer-constant when compiling unit tests
  with GCC and Clang.

• Fixed issue #250: Warnings about zero argument variadic macros with
  clang-msvc. Thank you u3shit for reporting and fixing.

• Fixed issue #251: trompeloeil::printer<> customization point now
  supports SFINAE expressions to constrain partial specializations.
  Thank you Christian Morales Vega for reporting.

• Fixed issue #245: Modify cmake to build thread_terror on Windows with
  MSVC.

• Use CMake internal Threads::Threads target where needed. Thank you
  Martin Hořeňovský for reporting.

• For CI builds, use github actions cacheing of built libc++ to shorten
  build times.

• Added CMake install namespace. Thank you offa

• Fixed bug where an expectation end of life was reported as an error
  if it was included in a satisfied sequence. Thank you Andy Saul.