Log Message:
(devel/R-roxygen2) Updated 7.2.3 to 7.3.0

# roxygen2 7.3.0

## New features

* `@docType package` now works more like documenting `"_PACKAGE"`,
  creating a `{packagename}-package` alias and clearly suggesting that
  you should switch to `"_PACKAGE"` instead (#1491).

* `_PACKAGE` will no longer generate an alias for your package name if
  a function of the same name exists (#1160).

* The NAMESPACE roclet now reports if you have S3 methods that are missing
  an `@export` tag. All S3 methods need to be `@export`ed (which confusingly
  really registers the method) even if the generic is not. This avoids rare,
  but hard to debug, problems (#1175). You can suppress the warning with
  `@exportS3Method NULL` (#1550).

* The `NAMESPACE` roclet once again regenerates imports _before_ loading
  package code and parsing roxygen blocks. This has been the goal for a long
  time (#372), but we accidentally broke it when adding support for code
  execution in markdown blocks. This resolves a family of problems where you
  somehow bork your `NAMESPACE` and can't easily get out of it because you
  can't re-document the package because your code doesn't reload.

## Minor improvements and bug fixes

* If you document a function from another package it is automatically
  imported. Additionally, if you set `@rdname` or `@name` you can opt out
  of the default `reexports` topic generation and provide your own docs
  (#1408).

* Generate correct usage for S4 methods with non-syntactic class names.

* The `ROXYGEN_PKG` env var provides the name of the package being documented
  (#1517).

* `@describeIn foo` now suggests that you might want `@rdname` instead
  (#1493). It also gives a more informative warning if you use it with an
  unsupported type (#1490).

* In `DESCRIPTION`, URLs containing escapes in `URL` and `BugReports` are
  now correctly handled (@HenningLorenzen-ext-bayer, #1415). Authors can now
  have multiple email addresses (@jmbarbone, #1487).

* `escape_examples()` is now exported (#1450).

* `@exportS3Method` provides the needed metadata to generate correct usage
  for S3 methods, just like `@method` (#1202).

* `is_s3_generic()` now ignores non-function objects when looking for a
  candidate function. I believe this is closer to how R operates.

* `@import` and friends are now ignored if they try to import from the
  package being documented. This is useful to add self-dependencies in
  standalone files meant to be used in other packages (r-lib/usethis#1853).

* `@importFrom` throws a friendlier error if you try and import a non-existing
  functions (@MichaelChirico, #1409).

* `@include` now gives an informative warning if you use a path that doesn't
  exist (#1497).

* `@inherit` can now also inherit from `@format` (#1293).