checkStoichiom: Checks whether the stoichiometries in each MFG conserve mass...
In HelenKettle/microPop: Modelling Microbial Populations

Checks whether the stoichiometries in each MFG conserve mass within a specified tolerance If they do not then if reBalanceStoichiom=TRUE the stoichiometry will be adjusted

1 2	checkStoichiom(stoichiom, Rtype, microbeNames, numPaths, stoiTol, reBalanceStoichiom = FALSE)

`stoichiom`	Array. stoichiom[gname,R,path]
`Rtype`	Resource type
`microbeNames`	Vector of strings which contains the names of the microbial groups in the system e.g. c('Bacteroides','Acetogens')
`numPaths`	Named vector. Number of paths for each microbial group
`stoiTol`	Scalar. tolerance i.e. if abs(prod-up)>stoiTol then warnings are given
`reBalanceStoichiom`	Logical to turn off or on rebalancing