- Move stats, zoo and seasonal to imports rather than depends, and import only needed named functions
- Explicitly build vignette
- Minor improvements to documentation eg giving the vignette a title.
- ggsdc gets a facet.titles argument
- ggsdc will now work with tibbles
- when a colour is maped to a variable that is a factor, ggsdc will now preserve the ordering of levels in that factor for drawing legends etc
- added a vignette
- Seasonal adjustment functions will estimate frequency and (for X13 related purposes) start from the data if possible. If the x variable is a Date rather than numeric, user still needs to provide start and frequency.
- testthat unit tests added
- stat_rollapplyr() provides rolling averages
- stat_index() allows time series to be converted to an index with arbitrary reference points
- added index option to stat_seas(), stat_decomp(), stat_stl(), ggsdc() and stat_rollapplyr()
- ggsdc() provides decomposition into four facets ala plot(stl(x)) but in ggplot2 approach
- First version released to CRAN
- stat_seas(), stat_decomp() and stat_stl() provide seasonal adjustment on the fly