Version v3.5

Signed-off-by: Claus Hunsen <[email protected]>

Version v3.4

Signed-off-by: Thomas Bock <[email protected]>

Version v3.3

Signed-off-by: Claus Hunsen <[email protected]>

Version v3.2

Signed-off-by: Claus Hunsen <[email protected]>

Version v3.1.2

Signed-off-by: Claus Hunsen <[email protected]>

Version v3.1.1

Signed-off-by: Claus Hunsen <[email protected]>

This is version v3.1

- Vertex attributes (se-sic#34, PRs se-sic#67 and se-sic#93, thanks to @flx5)
- Possibility to construct cumulative and overlapping ranges (se-sic#61, PR se-sic#96)
- Possibility to aggregate existing ranges (se-sic#61, PR se-sic#96, see also 52eae7f)
- Add functions to split data and networks by ranges (se-sic#61)
- Add functions to split data by networks (se-sic#34, a8ca406)

- Add 'issues.only.comments' to ProjectConf to construct issue-communication networks (se-sic#89, part of PR se-sic#95, e011782)
- Use lubridate package for all POSIXct conversions (se-sic#77, PRs se-sic#85 and se-sic#94)
- The list of authors now contains e-mail addresses (se-sic#69, 8ebfcb7, 7bfbe84)
- Add ability to the earliest and latest data timestamps (217e41c)
- Some more refactorings and minor fixes, also to the test suite

- Add 'date.offset' to possible edge attributes (0c1868a)
- Fix `sqldf` queries (35ea503)

Merge pull request se-sic#88 from se-passau/dev

v3.0.2 -- Fix minor bug and change output file for showcase

Merge pull request se-sic#83 from se-passau/dev

v3.0.1

Merge pull request se-sic#80 from se-passau/dev

v3.0