PIL requirement

[ElectricCandlelight]

Great work on making a good comprehensive message box that works well with CTK

Just thought I'd let you know that pip install Pillow is required for it to work and isn't listed on the readme and doesn't install automatically install with pip install CTkMessagebox

[Akascape]

@ElectricCandlelight
Nor customtkinter has any pillow requirements ig. But it also needs PIL.Image in order to work with images.

Moreover pillow is widely installed. Will add it in the setup of next update. (Currently customtkinter is added only)

[ElectricCandlelight]

Think it's because you can use pretty much all of CTK without using images.

I get that a lot of people have pillow installed but a lot of people will use a venv with just the standard library when starting a new project.

Would be nice if this could be merged into CTK cause it's a handy library.

[Akascape]

Just updated the module. Added the pillow requirement this time.