updated the changelog
updated the changelog

zerobatu/savon,oafridi/savon,advishnuprasad/savon,BlaneCordes/savon_vertex,savonrb/savon,rtrepo/savon,payfriendz/savon,billr578/savon,Eric-Guo/savon,viniciusnz/savon,mpangrazzi/savon,SICSoftwareGmbH/savon,latortuga/savon,enahum/savon