Run usethis::use_spell_check()

[ddsjoberg]

In the pull request checklist to run usethis::use_spell_check(). BUT, this has never actually been run on the package yet, and it catches many potential words. Most of these words are fine and can be added to the white list. But someone does need to review each of them before we bulk add them all. Once this first pass is made, it'll be easier for spell checks to be run on each pull request

d> usethis::use_spell_check()
✔ Setting active project to 'C:/Users/SjobergD/GitHub/visR'
✔ Adding 'spelling' to Suggests field in DESCRIPTION
✔ Setting Language field in DESCRIPTION to 'en-US'
The following words will be added to the wordlist:
 - ADTTE
 - ADaM
 - AVAL
 - Aalen
 - Bankar
 - CDISC
 - CI's
 - CMD
 - CNSR
 - COVID
 - Chisq
 - Chisquare
 - Codecov
 - Covid
 - DT
 - Dplyr
 - Kaplan
 - Karnakata
 - Lifecycle
 - NCCTG
 - ORCID
 - PARAM
 - PARAMCD
 - Papadopoulou
 - Pre
 - RCT
 - RGBA
 - RRGGBB
 - RRGGBBAA
 - SDTM
 - Surv
 - TRTP
 - Tarone
 - UCL
 - UX
 - adtte
 - al
 - analysed
 - asis
 - behaviour
 - bmjopen
 - bugfixes
 - colour
 - colours
 - columnheaders
 - conf
 - coxph
 - cran
 - ctype
 - cuminc
 - cumsum
 - datasource
 - df
 - doi
 - dplyr
 - epi
 - et
 - fontsize
 - getter
 - getters
 - ggplot
 - github
 - graphicsprinciples
 - grey
 - hexcode
 - https
 - img
 - io
 - kable
 - linetype
 - magrittr
 - mskcc
 - openpharma
 - particularily
 - pkgdown
 - psp
 - pst
 - purrr
 - pvalue
 - riskmetric
 - risktable
 - risktables
 - rtf
 - src
 - statistcal
 - statlist
 - strata's
 - stratifier
 - stype
 - survdiff
 - survfit
 - tableone
 - th
 - tibble
 - tidycmprsk
 - visR's