Fixed: Problems with missing slot 'label', always add the slot.
Added test for databse modifications.
Merge branch 'master' of https://github.com/IPS-LMU/emuR
Fixed: Stop with error message for unknown resultType claas name.
Added query feature: Query by label groups (legal directive in legacy EMU).
Fixed: Databases without links were not correctly converted,loaded and queries with seglist as resul type did not work.
Fixed: relative pathes containing asterisk wildcard pattern
Fixed: handling of empty data.frames.
Merge branch 'master' of https://github.com/IPS-LMU/emuR