Version consistency check

[mfherbst]

The python-side aiida-dftk and the julia-side AiidaDFTK.jl will inevitably have some form of version locking, in the sense that their expected IO interfaces depend on each other. We should agree on some convention about this.

E.g. will the semantic versioning in AiidaDFTK.jl reflect breaking changes where aiida-dftk needs to change ? If yes, then some for of checking of the version should probably occurr in aiida-dftk ?

[Technici4n]

I added

[compat]
AiidaDFTK = "0.1"

in the test environment under the assumption that we'd bump AiidaDFTK to 0.2 when breaking changes happen.

There should be some check at runtime too, I agree. We can either insert it in the julia -e argument, or add some "format version" to the json file. ({ "version": 1, ... })

[mfherbst]

I think I would indeed add a check somewhere using e.g.

using AiidaDFTK
using Pkg
@assert v"0.1.9" <= pkgver(AiidaDFTK) < v"0.2" 

or simila.