copre 0.1.0

• Initial release.

copre 0.2.0

• Replaced mdp() and polya() with gibbsmix() and seqre().
• Created a base plot method and loosened dependency on ggplot2.
• Minor bug fixes.
• Added a NEWS.md file to track changes to the package.

copre 0.2.1

• Fixed a Debian compile warning.
• Typo corrections in documentation.