Change log for Container::Buildah

0.2.1 2020-09-25T03:25:35-07:00 America/Los_Angeles
 [BUG FIXES]
 - CPAN testers feedback: back off Perl version requirement from 5.26 to
   5.20 (which is 3 years older than buildah)
 - CPAN testers feedback: remove buildah path check from t/011_prog.t
   because of course test machines don't have it
 - CPAN testers feedback: make t/014_buildah.t skip all tests if buildah
   isn't found

0.2.0 2020-09-24T15:27:13-07:00 America/Los_Angeles
 [DOCS]
 - add POD docs

 [ENHANCEMENTS]
 - update cmd() method to capture command output - add common
   process_param() method for buildah subcommand wrapper functions

 [MINOR]
 - code cleanup for Perl::Critic compliance at severity 3 (harsh) level
 - split off Container::Buildah::Stage and Container::Buildah::Subcommand
   classes to their own files
 - implement wrapper functions for all buildah subcommands
 - tests: low-level infrastructure functions/methods - config, prog,
   process_params
 - tests: mid-level infrastructure functions/methods - cmd, buildah
 - tests: minimal multi-stage container build

0.1.0 2020-07-17
 - preparation for posting to GitHub and CPAN