support more mosek parameters
DictList.extend duplicate id err message specific

Also include the index to make the issue easier to debug
add loopless FBA implementation

Added to the flux_analysis submodule. This commit also includes unit
tests.
add loopless FBA documentation
Merge pull request #133 from aebrahim/loopless

Add loopless FBA implementation
cobra.io.mat split read code to from_mat_struct

The function to convert the struct read in by scipy.io.loadmat has been
moved to its own function called by load_matlab model
bug in modify.convert_to_irreversible objectives

An objective reaction with a negative lower bound could cause incorrect
solutions after being made irreversible. This remedies the situation by
setting the objective coefficient of the reflection to -1 * the original
objective coefficient