updated the changelog [ci skip]
updated the changelog [ci skip]

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