• Correct X509_STORE_CTX_init() return value to integer. Previous
  versions of Net::SSLeay return nothing.
  
• Update tests to call close() to avoid problems seen with
  test 44_sess.t, and possibly other tests, running on older
  Windows Perl versions. Also add some missing calls in tests
  to shutdown and free ssl structures.
  
• Fix multiple formatting errors in the documentation for Net::SSLeay.
  Thanks to John Jetmore.
  
• Check for presence of libssl headers in Makefile.PL, and exit with an
  error instead of generating an invalid Makefile if they cannot be found.
  Fixes RT#105189. Thanks to James E Keenan for the report.
  
• Added support for SSL_CTX_set_msg_callback/SSL_set_msg_callback
  Thanks to Tim Aerts.
  
• Adjust time in ASN1_TIME_timet based on current offset to GMT to
  address GH-148. Thanks to Steffen Ullrich.
  
• Multiple updates to tests to match OpenSSL 3.0 behaviour.
  Thanks to Michal Josef Špaček.
  
• OpenSSL 3.0 related changes in tests include:
  
  • TLSv1 and TLSv1.1 require security level 0 starting with 3.0 alpha 5.
    
  • SSL_CTX_set_ciphersuites() and SSL_set_ciphersuites() ignore
    unknown ciphersuites starting with 3.0 alpha 11.
    
  • Error code and error string packing and formatting changes.
    
  • PEM_get_string_PrivateKey default algorithm requires legacy provider.
    
• See OpenSSL manual page migration_guide(7) for more information about
  changes in OpenSSL 3.0.
  
• Automatically detect OpenSSL installed via Homebrew on ARM-based macOS
  systems. Thanks to Graham Knop for the patch.
  
• Account for the divergence in TLSv1.3 ciphersuite names between OpenSSL and
  LibreSSL, which was causing failures of some TLSv1.3 tests with LibreSSL.
  
• In 36_verify.t, account for the presence of the X509_V_FLAG_LEGACY_VERIFY
  flag (signalling the use of the legacy X.509 verifier) in LibreSSL 3.3.2 and
  above.
  
• In 43_misc_functions.t, account for the fact that LibreSSL 3.2.0 and above
  implement TLSv1.3 without exposing a TLS1_3_VERSION constant.
  
• Expose OpenSSL 3.0 functions
  OSSL_LIB_CTX_get0_global_default, OSSL_PROVIDER_load,
  OSSL_PROVIDER_try_load, OSSL_PROVIDER_unload,
  OSSL_PROVIDER_available, OSSL_PROVIDER_do_all
  OSSL_PROVIDER_get0_name and OSSL_PROVIDER_self_test.
  Add test files 22_provider.t, 22_provider_try_load.t and
  22_provider_try_load_zero_retain.t.
  
• With OpenSSL 3.0 and later, the legacy provider is loaded in
  33_x509_create_cert.t to allow PEM_get_string_PrivateKey to
  continue working until its default encryption method is
  updated. Fixes GH-272 and closes GH-273.
  
• Remove the test suite's optional dependency on the non-core modules
  Test::Exception, Test::NoWarnings and Test::Warn. Tests that verify
  Net::SSLeay's behaviour when errors occur are now executed regardless of the
  availability of these modules.
  
• Fully automate the process of changing the list of constants exported by
  Net::SSLeay. Fixes GH-313.
  
• Perform function autoloading tests in the test suite. Fixes GH-311.
  
• In 36_verify.t, account for the fact that the X509_V_FLAG_LEGACY_VERIFY flag
  (signalling the use of the legacy X.509 verifier) is no longer exposed as of
  LibreSSL 3.4.1. Fixes GH-324.