v0.8.0	2019-03-15

    * A provider that pulls credentials from the instance metadata server has
      been added.
    * Credential refresh has been implemented for the environment and instance
      metadata credential providers.
    * COMPATIBILITY BREAKING: This probably won't break many, if any, callers,
      but it conceivable could. AWS::Credentials has been converted to a role
      and the punned class is used when non-refreshable credentials are
      returned.  This mades implementing refreshable credentials easier because
      attributes cannot be inherited.
    * More tests have been added. Previously, very, very little was actually
      tested.
    * Uses Perl built-ins for formatting and parsing W3C dates rather than the
      now no longer maintained DateTime::Format::W3CDTF.

v0.7	2018-11-10

    * Fix location of use v6 for v6.d. :(

v0.5    2018-08-03

    * Bugfix #2: Missing configuration files in .aws no longer cause problems.
      (HT: @MattOates)

v0.4    2018-07-11

    * Bugfix #1: Mark mutators as is rw. (HT: @AlexDaniel)

v0.3    2018-03-15

    * Second attempt to fix type problems in assigning $!token from the
      environment.

v0.2    2018-03-15

    * Fix a small type problem that breaks tests in certain cases.

v0.1    2018-03-11

    * Initial release.