It is great if it provides the features of change-inner

[c02y]

Currently embrace a/d/c the delimiters like ``, '', "", {}, []..., but it doesn't a/d/c the string inside those delimiters, like change-inner does, the problem of change-inner is, it doesn't get updates for 4 years and it only support change-inner and change-outer functions, it wastes two bindings, I know this is not a good reason.

But since embrace already takes care of the surrounding delimiters, it if better if it can modify both the surrounding delimiters and the string in the surrounding delimiters.