support marshal net.ParseIP(127.0.0.1) to 127.0.0.1

[bronze1man]

support marshal net.ParseIP(127.0.0.1) to 127.0.0.1

current result:

[
  0
  0
  0
  0
  0
  0
  0
  0
  0
  0
  255
  255
  127
  0
  0
  1
]

support encoding.TextMarshaler should fix this bug.

[trobro]

The current result is consistent with doing fmt.Printf of such an object:

net.IP{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xff, 0xff, 0x7f, 0x0, 0x0, 0x1}

[bronze1man]

The current result is not consistent with json.Marshal of such an object.

[trobro]

I see, it would have been better to be consistent with json.Marshal. Unfortunately changing that now would be a breaking change, it could cause problems for people who depend on the current behavior of Hjson. Let's leave this issue open, maybe we can do a 4.0 release in the future with breaking changes like this one.