Release Notes for Cppcheck 2.20

GUI:

- Fix: The Misra C checkbox in "Edit Project" dialog is unchecked after reloading project.

- Fix: In the Misra Report, use proper icons according to misra classifications

- Fix: The platform files are not shown in the dropdown in ProjectFileDialog

- Troubleshooting: detailed progress view that shows what files the threads are working on

Changed interface:

- removed CMake option "DISABLE_CRTDBG_MAP_ALLOC"

- CMake option "BUILD_TESTS" has been deprecated and will be removed in Cppcheck 2.22 - use "BUILD_TESTING" instead

Other:

- The built-in "win*" and "unix*" platforms will now default to signed char type instead of unknown signedness. If you require unsigned chars please specify "--funsigned-char"

- bumped minimum required CMake version to 3.22

- Support inline polyspace suppressions