Increment input field

[Davve37]

An upvote/downvote object that you can click to increase or decrease a modifier. So like if you have a field that shows a number/modifier, instead of typing in a different number or picking from a dropdown, you just increment it one step.

[mProjectsCode]

possibly implemented what you are looking for in b495086. Buttons can now modify frontmatter. Here is an example.