git-secret
A bash-tool to store your private data inside a git repository
... change from time to time, or new information appears, and other information is removed. When secrets are stored separately from your repo, you can not tell for sure which version of the configuration file was used with each commit or deploy. When building the automated deployment system there will be one extra step: download and place these secret-configuration files where they need to be. This also means you have to maintain extra secure servers where all your secrets are stored.