Julia v0.7 compatibility

[nico202]

Hi, trying to install this on julia v0.7 and getting lot of warnings + errors. Last commit might address this, is it possible to tag a relase and update uncurated.jl? Thanks

[nalimilan]

Unfortunately I still get an error when loading even on master. Apparently Femtocleaner will soon be working, which should fix most deprecations. Then we'll need somebody to fix the more serious errors.

[nalimilan]

Though note that DataArrays shouldn't really be needed on 0.7 since Array{Union{T,Missing}} is fast (though maybe not always as fast as DataArray{T}).

[nico202]

@nalimilan thanks. I wanted to try Queryverse on 0.7, so maybe I'd just have to wait for them to fix it and tag the release

[phaverty]

RCall.jl still depends on DataArrays.jl. I don't know if they plan to move away from DataArrays.jl or not. It would be quite nice to have RCall.jl on 0.7 sooner, rather than later, if updating DataArrays.jl is straightforward. Anything I can do to help? Precompiling DataArrays.jl generates various deprecation warnings, which I can live with, but it errors on "ipermute!! not defined". Maybe the second ! is just a typo?

[nalimilan]

It's not a typo, it's just been renamed to Base.invpermute!! in 0.7. A PR using the new name when VERSION >= v"0.7.0-DEV.3173" would be welcome.

[ararslan]

RCall.jl still depends on DataArrays.jl. I don't know if they plan to move away from DataArrays.jl or not.

They should. Perhaps a PR to RCall would be even better, moving it to using Array{Union{T,Missing}} instead of DataArray{T}. I'd be happy to review that.

[nalimilan]

RCall should definitely make the switch (and IIRC it already supports Array{Union{T,Missing}}), but it should probably continue depending on DataArray for a while just for compatibility (i.e. just to accept such arrays).

[nalimilan]

I guess the part which will require the most work to port is src/broadcast.jl. That won't be trivial to do.

[phaverty]

It looks like RCall may just drop DataArrays for 0.7, since it already supports Array{Union{T,Missing}}. Please see their issue 247. That seems like a nice, tidy solution. 0.7 seems like a good time for a bit of breakage.