Release 3.1.0 - WiFi/MDNS stability fixes, Bluetooth on Platform.IO

3.1.0 - Network stability fixes, Bluetooth on Platform.IO

Major Updates

• Manually add MDNS multicast Ethernet MACs to CYW43 (#1290)
• Adjust LWIP intf to avoid hangs/crashes under load (#1286)
• Add Bluetooth to the PIO CI (#1269)

Minor updates/bug fixes

• Add instructions for making I2S input work with Adafruit microphone (#1272)
• Add Bluetooth support to Platform.io (#1259)
• Add Keyboard LED callback for USB and BT (not BLE) (#1265)
• Allow setting names for BT/BLE HID devices (#1260)
• Use generic HID classes to minimize code duplic'n (#1254)
• Add setBattery to BLE HID devices (#1246)

New boards

• Add Adafruit Feather RP2040 DVI (#1245)
• Add board definition for Neko Systems BL2040 Mini (#1258)
• Fix pin assignment for Waveshare RP2040 1.28 LCD PIN_BAT_ADC (#1292)
• Reassign I2C pins to correct buses (#1255)

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3.0.0 - Large update, focused on Bluetooth support for the Pico W

Major Updates

• Bluetooth Classic and Bluetooth Low Energy (BLE) alpha support (#1167)
• Update to SDK 1.5 (#1167)
• Use Pico-SDK CYW43 infrastructure (#1167)
• Add Bluetooth Classic HID libraries and examples (#1240)
• Add Bluetooth SPP SerialBT and examples (#1240)
• Add BLE HID libraries and examples (#1240)
• Move pico-sdk to RPI's original version (#1239)
• More aggressive WiFiMulti, targets specific APs by BSSID (#1167)

Bugfixes

• Move PicoW auto-reassignment of LED pin to code (#1208)
• Always apply 5M speed to CMSIS_DAP TCL script (#1218)
• Return custom USB product and manufacturer (#1223)