Ok, this one seems really simple but I don't know where to begin.
My current Graphite version is 0.9.12 and I want to upgrade to 0.9.14. My OS is Ubuntu 14.
There is a documentation: http://graphite.readthedocs.io/en/latest/releases/0_9_14.html
But it doesn't say what we need to do with the previous packages. So, what shall I do? Remove them? Simply install the new packages? Which files shall I keep/remove?
Thanks in advance...