update for CircuitPython 8.x+/9.0 displayio compatibility

1.0.3

update for CircuitPython 8.x+/9.0 displayio compatibility

update docs; remove __delitem__ function

1.0.2

update docs; remove unused __delitem__ function

initial community bundle release

1.0.1

update docs; add .insert() method

initial release

To-do:
.extend(), .insert(), .remove(), .reverse(), .sort(), min(palette), max(palette)