linters: linters_with_defaults(
    line_length_linter(120) 
    , commented_code_linter = NULL
    , object_usage_linter = NULL
    , indentation_linter(
        hanging_indent_style = "never"
    )
    ,trailing_blank_lines_linter = NULL
    ) # see vignette("lintr")
encoding: "UTF-8"