Tags give the ability to mark specific points in history as being important
branch: release/3.9, date: 22102016
branch: release/3.8, date: 22101212
branch: release/3.8, date: 22052610
branch: release/3.8, date: 22052520
branch: release/3.8, date: 22050714
branch: release/3.8, date: 22011116