When I upgraded from 1.0 to 1.1, someone gave me these instructions.
Are these instructions still valid for the upgrade of 1.1 to 1.2
Note that if you want to keep the same packages as in 1.0 you
can copy (or rename if you are no longer using julia 1.0)
the .julia/environments/v1.0 folder to .julia/environments/v1.1
$ cd ~/.julia
$ cd environments/
$ ls
v1.0
$ cp -rp v1.0 v1.1
$ ls -l
total 0
drwxr-xr-x 4 ssiew staff 136 18 Aug 2018 v1.0
drwxr-xr-x 4 ssiew staff 136 18 Aug 2018 v1.1