Version 1.5.28 release

Changes in matio 1.5.28 (30 October 2024)

• Fixed bug writing MAT_T_INT8/MAT_T_UINT8 encoded character array to compressed v5 MAT file (regression of v1.5.12)
• Fixed bug reading all-zero sparse array of v4 MAT file (regression of v1.5.18)
• Updated C99 snprintf.c
• CMake: Enabled testing via option MATIO_BUILD_TESTING:BOOL
• CMake: Fixed build with Visual Studio ≥ 17.10 via option MATIO_USE_CONAN:BOOL and Conan 1.x
• Several other fixes, for example for access violations in Mat_VarPrint