• Added multiple thread support via openMP
• Added getNumChromosomeActiveConnections
• Fixed bug in the pow function
• Wrapped cgp.h in an extern “C” for compatibility with c++ compilers

• Fixed bug where the number of inputs passed into a given node was always set to the max arity.
• Fixed bug where it was possible (although unlikely) for a parent to be selected over a child even if they have equal fitness (due to using an unstable sort).
• The index of nodes displayed using printChromosomes now match those displayed using saveChromosomeDot.

• Now compiles with C++ compilers
• Added CGP shortcut connections option. See setShortcutConnections
• Added functionality to get the current output value of chromosome nodes. See getChromosomeNodeValue
• Added functionality to query if a given chromosome node is active. See isNodeActive
• Additional data sets have been added to the default install including the majority of the Proben benchmarks; courtesy of Sam Pick.

• PERFORMANCE IMPROVEMENTS
• Added pi node function
• Added 1 node function
• Added 0 node function
• Reduced the precession of connection weight values displayed using saveChromosomeDot() to two decimal places. Improves readability.
• Replaced setFitnessFunction() with setCustomFitnessFunction(). setFitnessFunction() is depreciated.
• Replaced setSelectionScheme() with setCustomSelectionScheme(). setSelectionScheme() is depreciated.
• Replaced setReproductionScheme() with setCustomReproductionScheme(). setReproductionScheme() is depreciated.
• Replaced addNodeFunctionCustom() with addCustomNodeFunction(). addNodeFunctionCustom() is depreciated.

• API CHANGE all float variables have been replaced by double for the extra position.
• NEW FEATURE Recurrent Cartesian Genetic Programming (RCGP). CGP-Library is now capable of creating programs/circuits/equations/neural networks which contain recurrent connections or feedback.
• Fixed bug in sin function (it was calling cos... my bad)
• Added mutation type “single”.
• Added wire function to function set.

Fixed Significant bug in runCGP (incorrect chromosome was returned if a perfect solution was not found)
added power function to function set
.dot graphviz contain more detail