[Diff since v0.2.2](https://github.com/LCSB-BioCore/FBCModelTests.jl/compare/v0.2.2...v0.2.3) **Closed issues:** - use `Base.@kwdef` for setting up defaults for constant-holding structures (#51) **Merged pull requests:** - Add @kwdef to constructors (#64) (@stelmo) - implement a small OMEX packer (#65) (@exaexa) - finally fix the flux-in-variability check (#66) (@exaexa)