Error(s) in re-building vignettes:
  ...
--- re-building ‘reshape.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Loading required package: lme4
Loading required package: Matrix

Attaching package: 'panelr'

The following object is masked from 'package:stats':

    filter

Quitting from lines 120-121 (reshape.Rmd) 
Error: processing vignette 'reshape.Rmd' failed with diagnostics:
unused argument (options = list(TRUE, TRUE, "markup", FALSE, NULL, TRUE, FALSE, "", TRUE, TRUE, "normalsize", "#F7F7F7", 0, "cache/", NULL, TRUE, NULL, FALSE, FALSE, "high", "asis", "default", "figure/", "png", NULL, 72, "png", 7, 7, "figure", NULL, NULL, "fig:", NULL, "", NULL, NULL, NULL, 1, TRUE, FALSE, 1, "controls,loop", TRUE, FALSE, TRUE, NULL, NULL, NULL, "R", FALSE, TRUE, TRUE, "unnamed-chunk-4", "long_panel(wide, prefix = \"_W\", begin = 1, end = 3, label_location = \"end\")", 504, 504, ""))
--- failed re-building ‘reshape.Rmd’

--- re-building ‘wbm.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Quitting from lines 53-55 (wbm.Rmd) 
Error: processing vignette 'wbm.Rmd' failed with diagnostics:
unused argument (options = list(TRUE, TRUE, "markup", FALSE, NULL, FALSE, FALSE, "##", TRUE, TRUE, "normalsize", "#F7F7F7", 0, "cache/", NULL, TRUE, NULL, FALSE, FALSE, "high", "asis", "default", "figure/", "png", NULL, 72, "png", 7, 7, "figure", NULL, NULL, "fig:", NULL, "", NULL, NULL, NULL, 1, TRUE, FALSE, 1, "controls,loop", TRUE, FALSE, TRUE, NULL, NULL, NULL, "R", FALSE, TRUE, TRUE, "unnamed-chunk-2", c("teen <- long_panel(teen_poverty, begin = 1, end = 5, label_location = \"end\")", "teen"), 504, 
    504, ""))
--- failed re-building ‘wbm.Rmd’

SUMMARY: processing the following files failed:
  ‘reshape.Rmd’ ‘wbm.Rmd’

Error: Vignette re-building failed.
Execution halted