Julia 1.0 will be rough until major packages have caught up with the deprecations introduced in 1.0 and 0.7. 1.0 does not tolerate these deprecations, while 0.7 will warn about them.

This makes a poor first day impression for new users who expect Plots.jl, IPython.jl, Juno.jl or other prominent packages in 1.0. The package maintainers are scrambling to catch up. I recommend using 0.7 for a couple weeks until the community catches up unless you are proficient enough to contribute PRs and help out.

(edit) To be clear, 0.7 was released at the same time as 1.0.