I would love to use local names from the island where I grew up for my upcoming game, so I need a few extra characters (well three in upper and lower caps)
I'm very pleased with the standard playdate font so I wonder if there's a quick and easy way for me to add åäö and ÅÄÖ in normal and bold? Or do I need to create a new font entirely?
In playdate caps I can see there's a set called Latin-1 Supplement. Can I add that somehow?
You can use Caps and create the characters in Latin-1 Supplement like you say, but I would recommend another font editor called tophat, as I find it much easier to work with and you can copy AO over to ÅÄÖ and just edit them.
You can edit one of the fonts found in the PlaydateSDK/Resources/Fonts folder on your computer, I believe the system default is Asheville. Import both the .png and .fnt into the editor.