Teensyduino 1.50
Changes since 1.49
Support for Arduino 1.8.11
Fix soft reboot on Teensy 4.0
Fix 1 GHz in Tools > CPU Speed
Fix IntervalTimer minimum on Teensy 4.0 (KurtE)
Add defines for ethernet and PLLs
Add defines ARDUINO_TEENSY## for each board
Fix Printable.h with WiFiNANA lib on Teensy 4.0 (MichaelMeissner)
Minor fix to defines (Frank B)
Update ADC & ST7735_t3 libraries