(recapitalize)

bump 1.2.2

add SBML name accessors, bump SBML compat

Add `names` field to genes, metabolites and reaction types.

add citation information

GRR IDs may contain underscores

...which seems logical as they are interpreted as normal identifiers in matlab.

postpone JuMP 0.22 compatibility

This would break most of the tutorials and notebooks before Tulip issue #112 is
addressed (see https://github.com/ds4dm/Tulip.jl/issues/112).

COBREXA should be a dep of documentation Project.toml to enforce version checks