(devel/R-covr) Updated 3.5.1 to 3.6.1

# covr 3.6.1

* The internal generic `merge_coverage()` now correctly registers the
  S3 methods.

* The internal test for recording large calls no longer assumes R is
  on the system PATH.

# covr 3.6.0

* Added `covr.record_tests` option. When `TRUE`, this enables the
  recording of the trace of the tests being executed and adds an
  itemization of which tests result in the execution of each trace.

  For more details see `?covr.record_tests` (@dgkf, #463, #485, #503)

* `as.data.frame()` now returns an 0 row data frame when there are no
  functions in a package (#427)

* `codecov()` is now more robust when `coverage` is not the output
  from `package_coverage()` and `token` is not provided (#456)

* `package_coverage(code = )` now accepts character vectors of length
  greater than 1 (@bastistician, #481)

* `package_coverage()` now handles packages with install or render
  time examples (#488)

* `package_coverage()` now sets the environment variable `R_TESTS` to
  the tests-startup.R file like R CMD check does (#420)

* `report()` now provides a more detailed error message if the `DT`
  and `htmltools` dependencies are not installed (#500).

* Fix `parse_gcov` bug when package is stored in directory with regex
  special characters, see #459

* Error/warning thrown for, respectively, missing gcov or empty parsed
  gcov output (@stephematician, #448)

* Support Google Cloud Build uploading reports to Codecov.io
  (@MarkEdmondson1234 #469)

* covr is now licensed as MIT (#454)

(mef)