If you are prepared to use the regular Julia binary (instead of JuliaPro) v0.7 was made with this specifically in mind. Code from 0.6 will run, but it will give you deprecation warnings and tell you how to updated it so that it works on 0.7/1.0 (the two are identical except that 1.0 removes deprecation warnings): PSA: use Julia 0.7 if you are upgrading
If you don’t want to use the regular Julia binaries, NEWS.md for the 0.7.0 release contains a list of all the deprecated functions, and what they have been replaced with: https://github.com/JuliaLang/julia/blob/v0.7.0/NEWS.md