added frozen string test
fixed a comment on a fronzen long strings test
fixed unpacker to freeze string after ENCODING_SET
added license attribute to gemspec
fixed Unpacker_each to handle exceptions in IO
v0.5.6
supported new spec for deserialization
updated cross-compile documents
v0.5.7
should not use require_relative to load an extension library

No guarantee that scripts and extension libraries are placed under same location, with mkmf.rb or recent RubyGems.
Merge pull request #22 from nobu/patch-1

should not use require_relative to load an extension library
add symbolize_keys support to unpack (compatible with msgpack-jruby)
Merge pull request #24 from technorama/master

add symbolize_keys support to unpack (compatible with msgpack-jruby)
default rake task executes :spec and :doc as well as :build
added documents for :symbolized_keys
fixed options parameter handling
updated spec for symbolize_keys
updated documents
fixed error message
fixed compatibility with MRI 1.8