Update changelog.
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ZuluPro/libcloud,Scalr/libcloud,Kami/libcloud,StackPointCloud/libcloud,andrewsomething/libcloud,vongazman/libcloud,apache/libcloud,mistio/libcloud,apache/libcloud,erjohnso/libcloud,StackPointCloud/libcloud,ZuluPro/libcloud,ZuluPro/libcloud,Scalr/libcloud,mistio/libcloud,pquentin/libcloud,ByteInternet/libcloud,ByteInternet/libcloud,pquentin/libcloud,andrewsomething/libcloud,Kami/libcloud,apache/libcloud,StackPointCloud/libcloud,vongazman/libcloud,andrewsomething/libcloud,pquentin/libcloud,Scalr/libcloud,ByteInternet/libcloud,vongazman/libcloud,Kami/libcloud,mistio/libcloud,erjohnso/libcloud,erjohnso/libcloud