Merge branch 'master' into core-updates
gnu: datamash: Fix license. * gnu/packages/datamash.scm (datamash)[license]: Change to GPL3+.
gnu: datamash: Update to 1.0.6. * gnu/packages/datamash.scm (datamash): Update to 1.0.6.
gnu: Add datamash. * gnu/packages/datamash.scm: New file. * gnu-system.am (GNU_SYSTEM_MODULES): Add it.