tinylabels 0.2.3

• Added as() methods to support the S4 class system.
• For the data-frame method, if names of to-be-assigned values (i.e., keys) are duplicated, an informative error message is returned.
• Added vignette specifying desired behavior of the tiny_labelled class.

tinylabels 0.2.2

• Added methods for group generics Math, Ops, Summary, and Complex from the base package.

tinylabels 0.2.1

• Removed LazyData from DESCRIPTION file

tinylabels 0.2.0

• Added a NEWS.md file to track changes to the package.
• Input validation now ensures that variable labels are (1) atomic vectors (i.e., no list-like objects) of (2) length equal to zero or one that (3) are not NULL.
• In variable.data.frame()<-, NULL elements of a value list are now ignored, which simplifies extracting variable labels from one data frame and assigning these variable labels to the corresponding columns of another data frame.
• In assign_label.default(), label and class attribute are now directly set, which comes with a small performance benefit.