0.04
    - Avoid using the non portable POPpx

0.03
    - hex, base64 support
    - Data::UUID compat api
    - improve the makefile bailout logic

0.02
    - Attempt to bail out of Makefile.PL if no <uuid/uuid.h> can be found
    - simplify overloaded object branch in XS code

0.01
    - Initial version