0.9.0

Release notes for cobrapy 0.9.0

Fixes

• Model.compartment is now a dynamic property fetching the
  compartments from all metabolites therefore always
  up-to-date. Assigning a dictionary to the same property updates the
  internal dictionary of compartment descriptions. This change removes
  the need for the check for missing compartments from
  validation.check_metabolite_compartment_formula.
• Excessively long output of html representations in jupyter notebooks are now abbreviated #577.
• Reaction forward and reverse variables are no longer cached with those object. No visible effect but simplifies the code.
• Fix bug in summary methods when used with exchange reaction sas objective. #595.

New features

• Model.objective_direction is a new revertible property to set maximization / minimization using the context manager.
• Change output of production_envelope to wide data frame format #587. Also allow multiple carbon source reactions and better handling of zero-division exceptions.
• Enable summing lists of reactions, see #596

Deprecated features

• Model.get_metabolite_compartments is deprecated (use
  Model.compartments instead).
• Reaction.get_compartments is deprecated (use
  Reaction.compartments instead).

Backwards incompatible changes

• The format of the dataframe production_envelope changed listing max and min on different columns instead of the same.