JuliaStats/DataArrays.jl — pull request #82 by garborg (2014-04-22 01:52:34+00:00)
Title: Make setindex! return the updated DataArray

For consistency with `Base`:
```julia
v = [1:7]
r = setindex!(v, 4:6, 1:3)
r
7-element Array{Int64,1}:
4
5
6
4
5
6
7
```
And I want to get rid of some unnecessary allocation in `DataFrames`' `setindex!` methods, but doing so would be inconsistent with `DataArrays` though consistent with `Base`.