5.0.0

• Updated Arduino AVR core to v1.8.6 (#314)
• Updated MCUdude's cores (#320):
  • MajorCore v3.0.0 (release notes)
  • MegaCore v3.0.0 (release notes)
  • MightyCore v3.0.0 (release notes)
  • MiniCore v3.0.0 (release notes)
• MCUdude cores switched to AVRDUDE v7.2
• Added initial support for the Urboot bootloader for MigntyCore, MiniCore, MegaCore, or MajorCore (#321)
• Fixed an issue with excessive quotes when path to AVRDUDE contains a whitespace character (#297)

Thanks @MCUdude, @thijses for great contributions!