Tags give the ability to mark specific points in history as being important
GitHub: copy commit reference 4-alpha
GitHub: copy commit reference 3-alpha
GitHub: copy commit reference 2-alpha
Git: copy commit reference 1.3
Git: copy commit reference 0.17-alpha
Git: copy commit reference 0.16-alpha
Git: copy commit reference 0.14-alpha
Git: copy commit reference 0.12-alpha
Git: copy commit reference 0.11-alpha
Git: copy commit reference 0.10-alpha
Git: copy commit reference 0.9-alpha