Add enum constant RECOMPUTE_SOME=3: some duration values have to be recomputed

at runtime (to determine time steps).

library/include/mobilisis/tariff_timestep_config.h

@@ -6,7 +6,7 @@
 #include <QDebugStateSaver>
 
 struct ATBTimeStepConfig {
-    enum class TimeStepConfig {STATIC=1, DYNAMIC=2};
+    enum class TimeStepConfig {STATIC=1, DYNAMIC=2, RECOMPUTE_SOME=3};
 
     ATBTimeStepConfig() = default;
     int tsconfig_id;