Coopr 2.5 Release announcement

Hart, William E is pleased to announce the release of Coopr 2.5 (2.5.3890). Coopr is a collection of Python software packages that supports a diverse set of optimization capabilities for formulating and analyzing optimization models.

The following are highlights of this release:

- Solvers
   * MIP solver interface updates to use appropriate objective names
   * Added support for suffixes in GUROBI solver interface
   * Improved diagnostic analysis of PH solver for the extensive form

- Usability enhancements
   * Improved robustness of coopr_install
   * Fixed Coopr installation problem when using easy_install
   * Added a script to launch the CooprAge GUI.
   * LP files now are written with the true objective name
   * Rework of pyomo command line to create a concise output
   * Many efficiency improvements during model generation!
   * Many improvements to diagnostic output and error handling
   * Expressions like "model.p > 1" can now be used within generation rules

- Modeling
   * Added support for generalized disjunctive programs (in coopr.gdp)
   * Constraints can now be specified in "compound" form:  lb <= expr <= ub
   * Significant robustness enhancements for model expressions
   * Improved error handling for constraint generation

- Other
   * Python 2.5 is deprecated due to performance issues
   * Python versions 2.6 and 2.7 are supported
   * New MS Windows installer is now available


See https://software.sandia.gov/trac/coopr/wiki/GettingStarted for instructions for getting started with Coopr.  Installers are available for MS Windows and Unix operating systems to simplify the installation of Coopr packages along with the third-party Python packages that they depend on.  These installers can also automatically install extension packages from Coin Bazaar.