Deprecate Kinetics::activationEnergies

include/cantera/kinetics/Kinetics.h

@@ -752,6 +752,7 @@ public:
      * length is the number of reactions
      *
      * @param E     Ouptut vector of activation energies. Length: m_ii.
+     * @deprecated To be removed in Cantera 2.2.
      */
     virtual void getActivationEnergies(doublereal* E) {
         err("getActivationEnergies");

src/kinetics/InterfaceKinetics.cpp

@@ -497,6 +497,8 @@ void InterfaceKinetics::getRevRateConstants(doublereal* krev, bool doIrreversibl
 
 void InterfaceKinetics::getActivationEnergies(doublereal* E)
 {
+    warn_deprecated("Kinetics::getActivationEnergies",
+                    "To be removed in Cantera 2.2.");
     copy(m_E.begin(), m_E.end(), E);
 }