Changes in version 1.0-2                        

  - Restore full test coverage.
  - make_def() gains new argument operator, default =.

                        Changes in version 1.0-1                        

  - Fix AppVeyor test.
  - Add CRAN status badge.

                  Changes in version 1.0 (2016-01-08)                   

  - CRAN release
  - Function makefile()
  - Functions make_*() to create entries: rules, comments, definitions,
    arbitrary text, and groups of rules
  - Adding entries to groups via c() or +
  - Function write_makefile() to write to file