You can CC people that you think might be interested; otherwise, begging
on the mailing list is fairly popular.
For what it's worth, these tickets look easy to review.
Since I looked at the commits, here's my drive-by suggestion: the
different() examples could use some explanatory text between them. For
example, knowing nothing about them, this one
sage: K.<c> = NumberField(x^2+1)
sage: K.different() == K.ideal(c.different())
True
looks to me like it's demonstrating something important but I've no idea
what.