Think about tags.Set design

[zombiezen]

It's unclear whether tags.Set is intended to be mutable or immutable. @rakyll mentioned wanting to hide the encoding details from the user, so I recommended the following:

type Set map[Key]Value

func (set Set) Copy() Set

type Value struct {
  b []byte
}

func StringValue(s string) Value {
  return Value{[]byte(s)}
}

func Int64Value(i int64) Value {
  return Value{[]byte{/* encode the int */}}
}

[rakyll]

We are considering to have only string values in the future, so I am going to keep this on hold until the data model is finalized.

[rakyll]

This issue is now obsolete due to #98.