Testing: Don't use Travis to test macOS because it slows down the entire spyder-ide organization
Testing: Don't use Travis to test macOS because it slows down the entire spyder-ide organization

I'm sorry to do this but we don't have much of a choice. Travis has very
few macOS workers and I'm afraid they are now mostly taken by
conda-forge.

davvid/qtpy,davvid/qtpy,goanpeca/qtpy,spyder-ide/qtpy,goanpeca/qtpy