Add a Quick Case-Toggle Button to the iOS Punctuation Toolbar

Monologue can often get the case of a word wrong. For example, if company names are common nouns, like Every, they often end up lowercase by mistake (Including when I was typing this very message via Monologue). Likewise, if I replace a word in the middle of a sentence, it often ends up capitalized by mistake. I would really like it if Monologue had a way to easily change the case of a highlighted word.

Some way to flip capitalization between a lowercase or capitalized word would be really nice in the punctuation toolbar on iOS. I currently have to delete the letter, go all the way to the ABC keyboard, and then press the shift key just to change the case. It's a time consuming process for a common error.

I know that you probably don't want to overload the punctuation toolbar, but it would be very convenient since word replacements often end up accidentally capitalized and sometimes new sentences end up accidentally lowercase.