v0.2.3

Added

• Macro RX_DISABLE_TEST_DISCOVERY to disable the automatic discovery of tests.
• Support for MinGW.

Changed

• Disable address sanitizer for custom data sections.
• Disable test discovery for unsupported compilers.
• Bump Contributor Covenant's code of conduct to version 2.1.

Fixed

• Compilation with MSVC in C++ mode failing.