Improve string encoding #113

Merged
merged 3 commits into from Jan 6, 2013
Commits on Jan 6, 2013
  1. Testing 8bit ascii_only strings.

    pck committed Jan 6, 2013
  2. Changed Psych::Visitors::YAMLTree.binary?(string).

    pck committed Jan 6, 2013
    * A human-readable representation can be used for ascii_only 8bit-encoded strings.
    * String subclasses are binary, even if they are character-encoded.