bump version for 0.6.0 release
bump version for 0.6.0 release

git-svn-id: 61fd7da5bf69289411929730428131ac1ed6e691@518 1168706f-7e1d-44e7-b746-9e172b5a9a2f

emory-libraries/eulcore-history,emory-libraries/eulcore-history