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MightyCore v3.0.0

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@MCUdude MCUdude released this 19 Oct 19:09
· 7 commits to master since this release

Changelog:

  • Replace Optiboot with Urboot
  • Replace Optiboot flash library with one that supports Urboot
  • Enable LTO by default
  • Add -fpermissive GCC build flag but better compatibility
  • Add support for EEPROM uploads directly from the sketch using Urboot or an ISP programmer
    • See README for more information
  • Add 6 MHz external oscillator option
  • Update toolchain to use Avrdude 7.2