Issue converting double.MaxValue

Hi!

seems like SafeMapper has issues when converting edge cases (i.e. MaxValue for double)
The test bellow fails.

[TestMethod]
public void SafeMapTest()
{
            double d = double.MaxValue;
            string value = d.ToString("R");
            var result = SafeMap.Convert<string, double>(value);
            Assert.AreEqual(d, result);
}

Any ideas?

Thanks
Alexander