Merge pull request #278 from UCD-SERG/use-lint

- initialized `lintr` with `lintr::use_lint()`

.Rbuildignore

@@ -23,3 +23,4 @@ allpopsamples_hlye.csv$
 ^CRAN-SUBMISSION$
 ^README\.qmd$
 ^codecov\.yml$
+^\.lintr$

.lintr

@@ -0,0 +1,2 @@
+linters: linters_with_defaults() # see vignette("lintr")
+encoding: "UTF-8"

NEWS.md

@@ -1,17 +1,19 @@
 # serocalculator (development version)
 
-# serocalculator 1.2.9.9007
-* Updated enteric fever example article with upgraded code and visualizations
-
 ## New features
 
+* Updated enteric fever example article with upgraded code and visualizations (#290)
+
 * Added template for reporting Issues 
 (from `usethis::use_tidy_issue_template()`) (#270)
 
 * Added template for pull requests 
 (from <https://github.com/bcgov/ssdtools>) (#265)
 
 ## Developer-facing changes
+
+* initialized [`lintr`](https://lintr.r-lib.org/) with `lintr::use_lint()` (#278)
+
 * created unit test for `df_to_array()` (#276)
 
 * fixed `dplyr::select()` deprecation warning in `df_to_array()` (#276)