cmb_define_parameterisation

 q_info = cmb_define_parameterisation(network, cmb_options)

 q_info is struct containing a description of the indepdendent / all parameters
                  as well as the conversion matrices between them 

 Parameterisation 'KV_KM_KA_KI':
  q contains independent parameters: KV, KM, KA, KI
  qall contains all parameters:      KV, KM, KA, KI

 Parameterisation 'Keq_KV_KM_KA_KI':
  q contains independent parameters: Keq_ind, KV, KM, KA, KI
  qall contains all parameters:      Keq,     KV, KM, KA, KI, Kcat_f, Kcat_r

 Defining the independent equilibrium constants:  
   split Ntot = A * B, where A has full column rank
   then we know that we can write keq = B' * keqind, where keqind contains independent constants