Switch to nyc front-end for istanbul and drop node 4 & 5 from CI because of this. The latter is probably more controversial, but since node 6 is LTS now, I don't feel compelled to test anything else in CI.
Coverage remained the same at 100.0% when pulling 219fcb56b859aa28ba30069c9e5e9bab3276c896 on switch-to-nyc into a006e6e1fcaedfd92bb853c6b29d0d05bbfd74cf on master.
Coverage remained the same at 100.0% when pulling 1dd8407a9a5fe28ba49ee1166cbb422d38bf0c8e on switch-to-nyc into a006e6e1fcaedfd92bb853c6b29d0d05bbfd74cf on master.
Switch to nyc front-end for istanbul and drop node 4 & 5 from CI because of this. The latter is probably more controversial, but since node 6 is LTS now, I don't feel compelled to test anything else in CI.