Version v1.3.2 to clean-up all compiler warnings possible, optimize library and examples

Releases v1.3.2

1. Clean-up all compiler warnings possible.
2. Optimize library and examples to reduce memory usage by using Flash String whenever possible.
3. Add Table of Contents
4. Add better debug feature

Version v1.3.1 to add many complex examples and fix SAMD bug.

Releases v1.3.1

1. Add many complex examples.
2. Add board Version String.
3. Fix SAMD bug.

Version v1.3.0 to add NRF52_MBED_TimerInterrupt Library and support to more AVR boards.

Releases v1.3.0

1. Add NRF52_MBED_TimerInterrupt Library to support NRF52840-based board using mbed-RTOS such as Nano-33-BLE.
2. Add support for UNO, Nano, Mini, Arduino Ethernet, Fio, BT, LilyPad, Pro, Pro Mini, NG, UNO WiFi.

Version v1.2.0 to add STM32_TimerInterrupt Library

Releases v1.2.0

1. Add STM32_TimerInterrupt Library and examples

Initial Release v1.1.0 to merge all TimerInterrupt Libraries into a Super Library.

Releases v1.1.0

1. Initial Super-Library coding to merge all TimerInterrupt Libraries