Release 2.7.1 - New menus, stereo PCM, picotool support, new boards, bugfixes

2.7.1

New boards

• Add VCC-GND YD-RP2040 board (#1120)
• Add 0xCB Helios (#1117)

Audio/I2S/ADC

• Add stereo support, docs for PWM playback (#1084)
• DMA-based ADC input (microphone, analog sensor) (#1101)
• Stop the I2S PIO when I2S::end called (#1103)
• Allow on-the-fly changes to PWMAudio when possible (#1098)
• Add LSBJ format support for I2S (#1095)

WebServer

• Add hook support to WebServer (#1119)

Compatibility

• Adding sei() and cli() as aliases for interrupts() and noInterrupts(). (#1089)
• Add WString.h include redirect for broader compat (#1083)
• Warn when Serial.printf() format is wrong (#1090)
• Move analogReadTemp() to C++-only (#1097)

General

• Redo boards menu, separate out upload method, add picotool upload (#1112)
• Add additional instructions for Linux Flatpak users (#1105)
• Handle slave mode I2C restarts (#1104)
• Update to LittleFS 2.5.1 (only minor updates) (#1099)
• Reduce stack usage of several components (#1093)
• Remove debug printout warnings (#1091)

2.7.0

• Add PWMAudio for DAC-free audio playback (#1076)
• digitalRead/WriteFast to sio_hw->gpio (#1077)
• Universal analogReadTemp() (#1075)
• Fix I2S::flush volatile casting (#1074)
• Reduce ADC memory footprint slightly (#1073)
• Make the AudioRingBuffer list-based (#1064)
• Speed up ADC reads by not re-initting (#1072)
• Add digitalWrite/ReadFast macros (#1069)
• Update to Adafruyit TinyUSB 1.17 (#1071)
• Degz Mizu changed to Viyalab Mizu RP2040 (#1062)
• Update to 1.5.0-a toolchain (#1060)
• Add nullbits Bit-C PRO board (#1051)
• Fix CI errors when more than one *.a in cache dir (#1049)