Collate all unreleased news items to a single entry for 0.4.0.



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rprotobuf@779 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Ooops, remove fragment.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rprotobuf@780 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Increment version to 0.4 -- Dirk to review and push to CRAN.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rprotobuf@781 edb9625f-4e0d-4859-8d74-9fd3b1da38cb