===============
Version history
===============

v.0.1 February 28, 2021: first public release of initial chapters

v.0.2 March 15, 2021: first release of chapters on network flows

v.0.3 March 30, 2021: first release of chapters on objectives

v.0.4 April 8, 2021: added a chapter on modeling with binary variables

v.0.5 April 30, 2021: added chapters on fixed charge and  knapsack problems

v.0.6 May 7, 2021: added chapter on set covering

v.0.7 May 14, 2021: added chapter on the TSP problem

v.0.8 May 28, 2021: added chapter on the quadratic optimization and LP
games; changed math to MathJax

v.0.9 February, 2022: complete re-reading, small modifications

v.0.99 August, 2023: general re-reading, error correction, added appendix and
arc routing chapters, preparing for a printed version

v. 1.0 February 2024: re-reading, added Vehicle Routing
   chapter. Printed version now available

v. 1.01 March 25, 2024: some errors corrected on the on line version

v. 1.02 April 4, 2024: further errors corrected; errata corrige added
   
.. include:: closing.rst