appveyor.yml: Install important dependencies
Add cargo Add julia Closes https://gitlab.com/coala/package_manager/issues/60 Closes https://gitlab.com/coala/package_manager/issues/93
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Add cargo Add julia Closes https://gitlab.com/coala/package_manager/issues/60 Closes https://gitlab.com/coala/package_manager/issues/93