Test v0.7 on Travis CI (Pkg3)

question

#1

I am trying to make Yao.jl work on v0.7’s CI with the new Pkg3. But I got this error:

ERROR: Cannot add package with the same name or uuid as the project

It seems that CI will use develop inside a package directory (I can reproduce this error locally.) But I don’t know how to fix it. Anyone can help me?