Release v3.4 · se-sic/coronet

3.4

Create global constant named BASE.ARTIFACTS (7031d45)
Split data into time-based equally-sized windows in function split.data.time.based (#49, 40974ba, a174753)
Split networks into time-based equally-sized windows in functions split.network(s).time.based (#49, 94cc87b, a174753, 5ac1492)
Add function to delete authors without specific edges from networks delete.authors.without.specific.edges (#76, b9319e3, 107854c, 4e211f0, 4850666)
Add methods ProjectData$group.authors.by.data.column and ProjectData$group.artifacts.by.data.column (#97, 11f7189)
Add method ProjectData$group.data.by.column (b78f54f, 11f7189, related to #97)

Add possibility to add multiple first activities for different activity types in one vertex attribute (#92, 04f18b3)
Add possibility to decide whether first activity should be computed per activity type or over all activity types when added as vertex attribute (#92, , 86962a3)
Refactor computation of vertex attribute first.activity for better performance (40b7d87, f518890)
Move RELATION.TO.DATASOURCE to module 'networks' (1ac09f6)
Determine list of artifacts more reasonably in ProjectData (#97, 23a8aa3, 11f7189)
Adapt ProjectData$get.artifacts to work with all data sources (#97, 0d184b8)
Improve function save.and.load to work without assignment (7f6ab1a)
Handle incorrect keys and values in get.key.to.value.from.df (5b74038, related to #97)

Fix computation of vertex attribute first.activity to handle empty data sources (4a9ad23, 425c46b)
Fortify check on callgraph revision in NetworkBuilder (dcf56ad)
Move pull-request template to take effect (6df72e9)
Fix function split.networks.time.based regarding case that provided list of networks only contains one element (010a935)
Fix problem with fractional time periods in generate.date.sequence (8d80fa9)
Handle ARPACK errors in eigen-centrality calculation (c5413c2, f213648)
Allow merge of empty networks (edges and/or vertices) (#142, 26e3bef)