Resolve all issues causing r-cmd to fail

[erika-redding]

https://www.r-bloggers.com/2019/08/no-visible-binding-for-global-variable/

Undefined global functions or variables:
. ..byvar_cols ..day_subset_cols ..n_idcols ..n_wtcols
..selected_cols ..subset_cols ..trip_subset_cols as.integer64 binned
data_type day day_id day_weight description est hh hh_id hts_data
i.description is_checkbox mode_1 mode_type num_checked num_trips
person person_id prop quantile shared_name str_extract_all
str_split_i trip trip_id trip_rate trip_weight value value_labels
variable variable_list variables_list vehicle vehicle_id weight
Consider adding
importFrom("stats", "quantile")
importFrom("utils", "person")
to your NAMESPACE file.

[erika-redding]

There's two solutions to this issue.

One is considered a hack:
## quiets concerns of R CMD check re: the .'s that appear in pipelines if(getRversion() >= "2.15.1") utils::globalVariables(c(".")).

The other is considered the proper fix by using @importfrom r lang .data. Then apply the .data to the expression (e.g., df %>% filter(.data$a > 5)).

Naturally we would want to use the hack, but it maybe best to take the long way out and use the proper fix.

source: STAT545-UBC/Discussion#451