Error(s) in re-building vignettes:
--- re-building ‘beta-binomial-1.Rmd’ using rmarkdown
Quitting from lines 142-147 (beta-binomial-1.Rmd) 
Error: processing vignette 'beta-binomial-1.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘beta-binomial-1.Rmd’

--- re-building ‘gamma-1.Rmd’ using rmarkdown
Quitting from lines 144-149 (gamma-1.Rmd) 
Error: processing vignette 'gamma-1.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘gamma-1.Rmd’

--- re-building ‘negative-binomial-1.Rmd’ using rmarkdown
Quitting from lines 144-149 (negative-binomial-1.Rmd) 
Error: processing vignette 'negative-binomial-1.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘negative-binomial-1.Rmd’

--- re-building ‘pied-flycatchers-1.Rmd’ using rmarkdown
Quitting from lines 139-145 (pied-flycatchers-1.Rmd) 
Error: processing vignette 'pied-flycatchers-1.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘pied-flycatchers-1.Rmd’

--- re-building ‘pied-flycatchers-2.Rmd’ using rmarkdown
Quitting from lines 124-136 (pied-flycatchers-2.Rmd) 
Error: processing vignette 'pied-flycatchers-2.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘pied-flycatchers-2.Rmd’

--- re-building ‘pied-flycatchers-3.Rmd’ using rmarkdown
Quitting from lines 122-128 (pied-flycatchers-3.Rmd) 
Error: processing vignette 'pied-flycatchers-3.Rmd' failed with diagnostics:
could not find function "discrete_range"
--- failed re-building ‘pied-flycatchers-3.Rmd’

--- re-building ‘weights-1-simulate.Rmd’ using rmarkdown
--- finished re-building ‘weights-1-simulate.Rmd’

SUMMARY: processing the following files failed:
  ‘beta-binomial-1.Rmd’ ‘gamma-1.Rmd’ ‘negative-binomial-1.Rmd’
  ‘pied-flycatchers-1.Rmd’ ‘pied-flycatchers-2.Rmd’
  ‘pied-flycatchers-3.Rmd’

Error: Vignette re-building failed.
Execution halted