0.4.0 - 2021.04.04

• Add support for multiple sectors per cluster in GhostFAT to enable larger flash sizes
  • Add native test for ghostfat with varous checks
• Add new board API:
  • board_reset()
  • board_flash_erase_app()
  • board_usb_init()
  • board_uart_init()
• Add erase_firmware application target (only implemented for iMXRT for now).
  • TinyUF2 will erase whole flash if MAGIC_ERASE_APP is written by application.
  • erase_firmware.uf2 is also uploaded as part of build/release asset if available
• No major chagnes to LPC55, STM32 F3 F4

ESP32-S2

• Rework Dotstar driver
• Speed up flashing speed by increase cache size to 64KB and using block erase
• Add new boards:
  • Adafruit Fun House
  • Unexpected Maker TinyS2

iMXRT

• Always write tinyuf2 image to flash if loaded in Serial Donwload mode (Boot Mode = 01)
• Add erase_firmware.uf2 to erase the whole flash except bootloader
• Add sdphost binary for arm 32bit e.g raspberry pi 4
• Add esp32programmer.uf2 app for selected board.