• Added a new --lint option to the pio project config command, enabling users to efficiently perform linting on the "platformio.ini" configuration file
• Enhanced the parsing of the "platformio.ini" configuration file to provide comprehensive diagnostic information
• Expanded the functionality of the library.json manifest by allowing the use of the underscore symbol in the keywords field
• Optimized project integration templates to address the issue of long paths on Windows (issue #4652)
• Refactored Unit Testing engine to resolve compiler warnings with "-Wpedantic" option (pull #4671)
• Eliminated erroneous warning regarding the use of obsolete PlatformIO Core when downgrading to the stable version (issue #4664)
• Updated the pio project metadata command to return C/C++ flags as parsed Unix shell arguments when dumping project build metadata
• Resolved a critical issue related to the usage of the -include flag within the build_flags option, specifically when employing dynamic variables (issue #4682)
• Removed PlatformIO IDE for Atom from the documentation as Atom has been deprecated