Develop (#79)
* Bug correction in sienaDataCreate
Issue #75 is hopefully solved by this change.
* Effects object - version and comparisons
Another modification in view of Issue #75. The comparison between effects objects in initializeFRAN is now based on the shortName instead of the effectName. Additionally, the effects object is given a "version" attribute.
* Version 1.3.23
Various changes, see NEWS.md.
* Edit manual
A short addition was made to the manual. Furthermore, the superfluous C++ class `DifferentCovariatePredicate` was dropped.
* Corrections of version 1.3.23
Corrections of attributes of effects object and input of list of sienaFit objects for sienaGOF.
* Revert "Corrections of version 1.3.23"
This reverts commit bddedf3f3012b6965d590829447701ac31180fbd.