updated changelog
updated changelog

SICSoftwareGmbH/savon,latortuga/savon,zerobatu/savon,mpangrazzi/savon,billr578/savon,viniciusnz/savon,kimptoc/Savon-with-username-token-digest,enahum/savon,Eric-Guo/savon,advishnuprasad/savon,oafridi/savon,payfriendz/savon,travis-repos/savon,BlaneCordes/savon_vertex,rtrepo/savon,savonrb/savon