Additional Spanish language macro

[Marisa the Magician]

I've noticed that there is a macro for a/o but not one for cases like the singular article una/un where just the feminine "a" gets added. Although I haven't encountered any cases like these in vanilla strings, they may appear in mods (I'm saying this because I have just run into a situation where it's needed).

[Graf Zahl]

Feel free to add it. You do have access, don't you?

[Marisa the Magician]

Ah, true. It is done, then. While I was at it I added another one I had forgotten about, where it's a/e instead.