• Override debugging firmware loading mode using --load-mode option for pio debug command
• Added support for CLion IDE 2021.3 (pull #4085)
• Removed debugging "legacy Click" message from CLI (issue #4083)
• Fixed a "TypeError: sequence item 1: expected str instance, list found" issue when extending configuration option in "platformio.ini" with the multi-line default value (issue #4082)