1.4.0

• Fix a logical error which prevented the use of the board-info subcommand when using espflash
• Improvements made to serial port related errors to make the actual problem more clear
• Allow for the modification of the application firmware header
  • Can now set the flash frequency, size, and mode via the command line
• Use the espmonitor library for our serial monitor
• Default app partition size is now scaled with flash size
• Add an option to the save-image subcommand to merge all binaries into a single file, allowing for use with QEMU
• Update serialport and all other outdated dependencies
  • This should resolve issues when using macOS Monterrey and/or M1