* correct filename in name_badge.py for Tufty
* Update 240x240 round breakout examples to work with PicoGraphics
* Update colourlcd240x240demo.py to work with PicoGraphics
* Fixed rainbow.py for Pico Display and Pico Display 2.0
* Update display examples to work with PicoGraphics
* add new display example 🌈
* adventures in rainbow RAM
* add button example for pico inky pack
* tidy up examples, make names more consistent
* Update Pico Explorer and 160x80 LCD breakout examples
* Accommodate dither
Hel Gibbons