Updating release notes

CHANGELOG.txt

@@ -24,6 +24,7 @@ Pyomo 5.1
 - Fixed error messages in pyomo.dae (#81)
 - Revised CBC interface to recognize intermediate non-integer solutions (#77)
 - Added checks for IPOPT test failures based on version info (#72)
+- Removed support for OpenOpt
 
 -------------------------------------------------------------------------------
 Pyomo 5.0.1

RELEASE.txt

@@ -1,50 +1,27 @@
-We are pleased to announce the release of Pyomo 5.0. Pyomo is a collection of Python software packages that supports a diverse set of optimization capabilities for formulating and analyzing optimization models.
-
-
-The following are a summary of changes since Pyomo 4.0:
-
-Release and documentation of GDP, Bilevel, MPEC and DAE capabilities
-  * Finalized many APIs
-  * Bug fixes in transformations and meta-solvers
-  * First documented release of pyomo.bilevel, pyomo.mpec and pyomo.dae
-
-Pyomo command
-  * Added support for configuration files
-  * Added 'pyomo install-extras' to install optional Python packages
-  * Added the 'pyomo info' subcommand to describe Pyomo installation
-  * Consolidated help information in the 'pyomo help' subcommand
-
-Installers
-  * Conda installers
-  * Script to install pyomo.extras
-  * Many updates to the pyomo_install script
-
-Modeling Changes
-  * Rework of model transformation logic
-  * SOSConstraint, Suffix, Block, Expression
-  * Added slicing when indexing a component.
-  * Allow the use of ellipsis in indices
-  * SP representation for mutable stochastic data
-
-Scripting
-  * Optimization results loaded into models
-  * Removed explicit model preprocessing
-
-Solver Updates
-  * Complete rework of pyomo.mpec solvers
-  * Better support for NEOS solvers
-  * Resolved various issues with python direct interfaces (cplex and gurobi)
-  * Major performance enhancements for Pyro-based solver managers
-  * Significant speed-up of CPLEX solver interfaces
-  * Adding PySP solver interface to the SD solver
-
-Misc
-   * Added utility for converting PySP models into SMPS input files
-   * Added an MPS file writer
-   * Many fixes to the 'sol' file reader
-   * Support evaluating external functions in AMPL-stype shared libraries
-   * Added support for automatically generating "template expressions"
-   * Many bug fixes
+We are pleased to announce the release of Pyomo 5.1. Pyomo is a collection of Python software packages that supports a diverse set of optimization capabilities for formulating and analyzing optimization models.
+
+
+The following are a summary of changes since Pyomo 5.0:
+
+- Added a CONOPT plugin to handle a custom SOL file output (#88)
+- Changed 'pyomo solve' to use any Model object that is found, rather than
+  requiring the default object to be named 'model' (#80)
+- Reworked the solver testing infrastructure to enable enumeration of all
+  test scenarios, which is used by 'pyomo test-solvers' (#78)
+- Fixes for xpress solver options writer (#79)
+- Resolved an issue where Pyomo was unnecessarily cloning most inequality
+  expressions (#80)
+- Reworked the Pyomo *.DAT file parser and post-parse processing logic. This
+  eliminates parse ambiguities that were causing test failures.
+- Finalized book test examples for the new edition of the Pyomo book
+- Added pyomo.contrib to support integration of third-party Pyomo libraries
+  in a standard manner
+- Fixed TravisCI testing issues where the incorrect version of Python was being
+  tested
+- Fixed error messages in pyomo.dae (#81)
+- Revised CBC interface to recognize intermediate non-integer solutions (#77)
+- Added checks for IPOPT test failures based on version info (#72)
+- Removed support for OpenOpt
 
 
 Enjoy!