How to select a subset of an AxisArray by keyword?

[Datseris]

I have B = AxisArray(randn(10,10), :x, :z);. I want to be able to do something along the lines of

select(B; x = -10 .. 10)

or even using the syntax B[x = -10 .. 10].

1. Is this possible?
2. Would you accept it as a PR? I couldn't find something like that in the documentation.