Beatus Vir and Fantasia 25

There's a correction to the notes in the first line of the Superius part in Beatus Vir by Lassus. It hasn't yet made it to the Motets book.

I also introduced the actual mensuration sign used by Phalesius into Fantasia 25, also by Lassus.

My recorder teacher thinks this means that it's a really fast three, the kind that modern editions quarter the note values for.