Makes codecov only report coverage
Makes codecov only report coverage

codecov failed builds when the code coverage was lower than previously. This is a bit frustrating because it doesn't always make sense to increase test coverage.
wokalski/Diff.swift,tonyarnold/Differ,tonyarnold/Differ,wokalski/Diff.swift,tonyarnold/Differ,wokalski/Diff.swift,tonyarnold/Differ