Georgia has executed Kelly Renee Gissendaner with a fatal injection for the slaying of her husband, despite a plea for clemency from their children.Last-minute appeals from her lawyers to the 11th US circuit court of appeals and the US supreme court as well as the Georgia board of pardons and paroles all failed.Gissendaner, 47, died by injection of pentobarbital at 12:21am EDT on Wednesday at Georgia Diagnostic and Classification prison in Jackson, a prison spokeswoman said.She sobbed as she said she loved her children and apologized to the family of her husband Douglas Gissendaner, who she was convicted of conspiring...