0.081
  - reorganize JSON output
  - small fixes in pod

0.08
  - add TO_JSON method
  - substitute offset numbers by constants
  - fix typos in pod documentation
  - test tests for pod

0.07
  - add check for publisher restrictions
  - validate if string is a valid base64 url encoded string

0.06
  - add special features as constants
  - add purpose ids as constants
  - add missing methods on pod documentation
  - on list context methods created and last_updated should return epoch in seconds + nanoseconds

0.051
  - remove dependency List::MoreUtils
  - make sure the code will work on perl 5.8
  - make sure the code will work on 32 bits
  - make sure the code will work on newer versions of perl where MIME::Base64 supports base64 url format
  - change version schema
  - some small refactors
  - doc fixes

0.05
  - almost the same as v0.051

v0.0.4
  - fix issue with pack Q on 32 bits environment 
  - fix issue with missing dependency

v0.0.3
  - complete basic development

v0.0.2
  - add first pod

v0.0.1
  - initial version, incomplete
