1.4.3 - fix compile error in I2C helper macro

Fixes a compile error in the I2C macro.

Fix crash in I2C case

Fixes a crash using I2C constructor

ESP32 compatible analog, sync backlight correctly

• Now uses IoAbstraction's AnalogDevice class to handle the PWM/DAC based backlight better.
• Proper sync operation on set backlight

Simplier initialisation options

New construction methods are available for standard I2C Backpacks and DfRobot LCD shields.

Support for Nano33BLE - Moving to PlatformDetermination

Using the new IoAbstraction platform determination to work out what the underlying OS is.
Correct the platformIO libraries.json file.

Support for Arduino, ESP and mbed. Backlight improvements

This release adds:

• Support for mbed boards that use V5 RTOS including i2c backpacks and other Ioexpanders. Remains fully compatible with Arduino and ESP.
• Moving towards LCD API compliance, backlight methods added for PWM and inverted backlights.
• Small performance improvements now available when using wire at 100Khz (EG: PCF8574's) by setting the delay to 0.

Major improvement in examples and readme

This tidies up the library in terms of examples and documentation.

Allows for characters to reside in program memory

1.1.0

Update library.properties