message: tests: increase milliseconds2 test maximum to 1580
  OSX unit tests on travis failing with milliseconds2 = 1575.065805
diff: @@ -301,7 +301,7 @@ TEST_CASE("Test OS-specific functions", "[osspecific]")
  CHECK(milliseconds1 < 1.0);
  CHECK(milliseconds2 > 1480.0);
  - CHECK(milliseconds2 < 1520.0);
  + CHECK(milliseconds2 < 1580.0);
  }
  // timestamp as of the creation of this test
  