How to append to SortedRange?

[Uranuz]

I have read doc for std.range and std.algorithm, but I have not 
found how I could add new value to SortedRange. What I want is to 
sort some array of structs by one of it's fields using custom 
predicate and save this SortedRange somewhere. But also I need to 
be able to append new elements into array and keep it sorted and 
using advantages of sorted data structure to for doing it quick.

Is it possible to do it in current implementation of SortedRange. 
If not what workarounds would you advise?