Genes not parsed if they have an "@" symbol

[HettieC]

Hello!

If gene IDs have an "@" symbol, they do not parse correctly:

_parse_grr_to_sbml("A@1")
returns the error
ERROR: DomainError with A@1: cannot parse GRR Stacktrace: [1] _parse_grr_to_sbml(str::String) @ COBREXA ~/.julia/packages/COBREXA/IheBW/src/base/utils/gene_associations.jl:189 [2] top-level scope @ ~/Documents/Projects/ECYeast/src/plotting/conservation_of_metabolism.jl:8

[exaexa]

Fixed in develop and in JSONFBC package. Will release eventually, please use the develop version for now if required.