Error(s) in re-building vignettes:
--- re-building 'batch-mode.Rmd' using rmarkdown
--- finished re-building 'batch-mode.Rmd'

--- re-building 'single-images.Rmd' using rmarkdown
trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.6/colorspace_1.4-1.zip'
Content type 'application/zip' length 2551156 bytes (2.4 MB)
==================================================
downloaded 2.4 MB

trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.6/labeling_0.3.zip'
Content type 'application/zip' length 62860 bytes (61 KB)
==================================================
downloaded 61 KB

trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.6/munsell_0.5.0.zip'
Content type 'application/zip' length 245210 bytes (239 KB)
==================================================
downloaded 239 KB

trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.6/RColorBrewer_1.1-2.zip'
Content type 'application/zip' length 55572 bytes (54 KB)
==================================================
downloaded 54 KB

trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.6/reshape2_1.4.3.zip'
Content type 'application/zip' length 627722 bytes (613 KB)
==================================================
downloaded 613 KB

trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.6/scales_1.0.0.zip'
Content type 'application/zip' length 1072974 bytes (1.0 MB)
==================================================
downloaded 1.0 MB

trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.6/viridisLite_0.3.0.zip'
Content type 'application/zip' length 60685 bytes (59 KB)
==================================================
downloaded 59 KB

trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.6/ggplot2_3.1.1.zip'
Content type 'application/zip' length 3636069 bytes (3.5 MB)
==================================================
downloaded 3.5 MB

Quitting from lines 34-37 (single-images.Rmd) 
Error: processing vignette 'single-images.Rmd' failed with diagnostics:
could not find function "intmat_list_bind_nth_rows"
--- failed re-building 'single-images.Rmd'

SUMMARY: processing the following file failed:
  'single-images.Rmd'

Error: Vignette re-building failed.
Execution halted