### Initial Releases v1.0.0
1. Initial coding to support **RP2040-based boards** such as ADAFRUIT_FEATHER_RP2040, RASPBERRY_PI_PICO, etc. using [**Earle Philhower's arduino-pico core**](https://github.com/earlephilhower/arduino-pico)
2. The hybrid ISR-based PWM channels can generate from very low (much less than 1Hz) to highest PWM frequencies up to 1000Hz with acceptable accuracy.
### Initial Releases v1.0.0
1. Initial coding to support **RP2040-based boards** such as Nano_RP2040_Connect, RASPBERRY_PI_PICO, etc. using RP2040 [**ArduinoCore-mbed mbed_nano or mbed_rp2040** core](https://github.com/arduino/ArduinoCore-mbed)
2. The hybrid ISR-based PWM channels can generate from very low (much less than 1Hz) to highest PWM frequencies up to 1000Hz with acceptable accuracy.
### Initial Releases v1.0.0
1. Initial coding to support **RP2040-based boards** such as Nano_RP2040_Connect, RASPBERRY_PI_PICO, etc. using either RP2040 [**ArduinoCore-mbed mbed_nano or mbed_rp2040** core](https://github.com/arduino/ArduinoCore-mbed) or [**Earle Philhower's arduino-pico core**](https://github.com/earlephilhower/arduino-pico)
2. The purely hardware-based PWM channel can generate from very low (lowest is 7.5Hz) to very high PWM frequencies (in the **MHz** range, up to **62.5MHz**).
1. Initial coding to support **Portenta_H7 boards** such as Portenta_H7 Rev2 ABX00042, etc., using [**ArduinoCore-mbed mbed_portenta** core](https://github.com/arduino/ArduinoCore-mbed). Max PWM frequency is limited at 1000Hz.
Non-blocking replacements for delay().
paragraph=Every will tell you _at_ every n millis(). Timer will tell you (once) when n millis() has gone by. Several convenient ways to use them. Several other variants for sequences, etc.
### Initial Releases v1.0.0
1. Initial coding to support **Portenta_H7 boards** such as Portenta_H7 Rev2 ABX00042, etc., using [**ArduinoCore-mbed mbed_portenta** core](https://github.com/arduino/ArduinoCore-mbed)
### Initial Releases v1.2.1
1. Initial coding to support **Portenta_H7 boards** such as Portenta_H7 Rev2 ABX00042, etc., using [**ArduinoCore-mbed mbed_portenta** core](https://github.com/arduino/ArduinoCore-mbed)
2. Permit up to 16 super-long-time, super-accurate ISR-based timers to avoid being blocked
3. Using cpp code besides Impl.h code to use if Multiple-Definition linker error.
4. Bump version to v1.2.1 to sync with [STM32_TimerInterrupt library](https://github.com/khoih-prog/STM32_TimerInterrupt)
