Can not parse string like bar10.0

[Rory-Z]

I add test case like this:

	t.Run("parse the string and return a pointer to the Config", func(t *testing.T) {
		got, err := ParseString("{foo:bar10.0}")
		assertNoError(t, err)
		assertDeepEqual(t, got, &Config{Object{"foo": String("bar10.0")}})
	})

and I got this: expected: "{foo:\"bar10.0\"}", got: "{foo:\"bar10\"\"\"0e+00}"

In HOCON Playground, I'm input foo: bar1.0 and I got "foo" : "bar1.0", So I think this is a bug.

[Rory-Z]

@gurkankaymak Could you please take a look ?