Log Message:
(devel/R-glue) Updated 1.7.0 to 1.8.0, make test does not pass

# glue 1.8.0

* glue has a two new articles:
  - "Get started", with contributions from @stephhazlitt and @BrennanAntone
    (#137, #170, #332).
  - How to write a function that wraps glue (#281).

* If the last argument of `glue()` is empty, it is dropped (#320). This makes
  it easy to structure `glue()` calls with one argument per line, and to \ 
anticipate adding arguments:

  ``` r
  glue(
    "here's some text, ",
    "and maybe more text will be added in the future?",
  )
  ```

* `glue_sql("{var*}")` once again generates `NULL` if var is empty.
  This reverts #292. (#318).

* The `.envir` argument to `glue()` and `glue_data()` really must be an
  environment now, as documented. Previously a list-ish object worked in
  some cases (by accident, not really by design). When you need to lookup
  values in a list-ish object, use `glue_data(.x =)` (#308, #317).
  Ditto for `glue_sql()` and `glue_data_sql()`.