Error(s) in re-building vignettes:
  ...
--- re-building ‘TSrepr_extentions.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Warning in melt.data.table(data.table(class = as.factor(clus_res$cluster),  :
  id.vars and measure.vars are internally guessed when both are 'NULL'. All non-numeric/integer/logical type columns are considered id.vars, which in this case are columns [class]. Consider providing at least one of 'id' or 'measure' vars in future.
Quitting from lines 86-104 (TSrepr_extentions.Rmd) 
Error: processing vignette 'TSrepr_extentions.Rmd' failed with diagnostics:
The melt generic in data.table has been passed a matrix, but data.table::melt currently only has a method for data.tables. Please confirm your input is a data.table, with setDT(clus_res$centers) or as.data.table(clus_res$centers). If you intend to use a method from reshape2, try installing that package first, but do note that reshape2 is deprecated and you should be migrating your code away from using it.
--- failed re-building ‘TSrepr_extentions.Rmd’

--- re-building ‘TSrepr_representations_of_time_series.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.
--- finished re-building ‘TSrepr_representations_of_time_series.Rmd’

--- re-building ‘TSrepr_representations_use_case.Rmd’ using rmarkdown
Warning in engine$weave(file, quiet = quiet, encoding = enc) :
  Pandoc (>= 1.12.3) and/or pandoc-citeproc not available. Falling back to R Markdown v1.
Warning in melt.data.table(data.table(class = as.factor(res_km$cluster),  :
  id.vars and measure.vars are internally guessed when both are 'NULL'. All non-numeric/integer/logical type columns are considered id.vars, which in this case are columns [class]. Consider providing at least one of 'id' or 'measure' vars in future.
Quitting from lines 51-68 (TSrepr_representations_use_case.Rmd) 
Error: processing vignette 'TSrepr_representations_use_case.Rmd' failed with diagnostics:
The melt generic in data.table has been passed a matrix, but data.table::melt currently only has a method for data.tables. Please confirm your input is a data.table, with setDT(res_km$centers) or as.data.table(res_km$centers). If you intend to use a method from reshape2, try installing that package first, but do note that reshape2 is deprecated and you should be migrating your code away from using it.
--- failed re-building ‘TSrepr_representations_use_case.Rmd’

SUMMARY: processing the following files failed:
  ‘TSrepr_extentions.Rmd’ ‘TSrepr_representations_use_case.Rmd’

Error: Vignette re-building failed.
Execution halted