`stutter` arguments are not patternable with mininotation

[cleary]

http://tidalcycles.org/docs/patternlib/tour/alteration#stutter

This works:

$ stutter 4 (0.125/2)
$ s "bd"

This does not:

$ stutter "<4 2>" "[(0.125/2) 0.25]"
$ s "bd"

It'd be cool if it did support mininotation :)

[ndr-brt]

Haven't we discussed about deprecating all the stut-something function names? #902
I missed this when I introduced echo