Make Filter and DynaTags Serializable.
Yes, had to back this one out. Works just fine locally, but now
there are conflicts with Scalaz, because Scalaz hasn't upgraded to
ScalaCheck 1.11.0 yet. So not sure how to do this. For now going
back. The command I used was:

git revert -n cf0dad32b8eaa7611ccb7bec25f084d55014aa22

This reverts commit cf0dad32b8eaa7611ccb7bec25f084d55014aa22.
Fixed problem when sorted matcher is used with single-element collection.