# Version history Version 1.0 August 10, 2010 Initial release Version 1.1 October 14, 2010 Major enhancement: Implementation of time-series min-cost-max-flow. Several minor bugfixes: e.g., GUI now passes correct alpha value to PageRank. Version 1.12 October 18, 2010 Fixed configuration issue between the python libraries py2exe and elementtree that caused python-based functions (betweenness centrality, etc.) to fail with ImportError message. Version 1.2 October 24, 2011 Approximate shortest-path betweenness centrality allows faster computation of this metric Approximate current flow betweenness centrality allows faster computation of this metric; function also uses sparse matrices for lower RAM requirements Network flow functions updated to LEMON version 1.2.2 Updates to manual and tutorial dataset Version 1.2.1 April 2, 2012 Updated python and python packages, including NetworkX to version 1.6. Current flow betweenness centrality subset also now uses sparse matrices for lower RAM requirements. (Note that there is no approximate function for current flow betweenness centrality subset, so it is still slow for large datasets). Version 1.3 July 12, 2013 Updated python and python packages, including NetworkX to version 1.8dev. Updated Hexsim-based functions to Hexsim version 2.5.1, which improves conversion of .asc input file to hxn file. Added support for locales (e.g., areas in Europe) that use a comma instead of a period as decimal separator. Version 1.3.1 August 19, 2013 Updated LEMON to version 1.3. Turned off arc mixing in network flow functions to resolve potential division by zero error. Updated NetworkX to version 1.8.1. Updated Hexsim-based functions to Hexsim version 2.5.3. Planned future enhancements: Better support for multi-threaded implementation of of network flow due to release of LEMON 1.3. The online help was made with Dr.Explain