paragraph newlines in news item

Author: mattdowle

NEWS.md

@@ -19,7 +19,9 @@
 ## NOTES
 
 1. `bit64` v4.0.2 and `bit` v4.0.3, both released on 30th July, correctly broke `data.table`'s tests. Like other packages on our `Suggest` list, we check `data.table` works with `bit64` in our tests. The first break was because `all.equal` always returned `TRUE` in previous versions of `bit64`. Now that `all.equal` works for `integer64`, the incorrect test comparison was revealed. If you use `bit64`, or `nanotime` which uses `bit64`, it is highly recommended to upgrade to the latest `bit64` version. Thanks to Cole Miller for the PR to accomodate `bit64`'s update.
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     The second break caused by `bit` was the addition of a `copy` function. We did not ask, but the `bit` package kindly offered to change to a different name since `data.table::copy` is long standing. `bit` v4.0.4 released 4th August renamed `copy` to `copy_vector`. Otherwise, users of `data.table` would have needed to prefix every occurrence of `copy` with `data.table::copy` if they use `bit64` too, since `bit64` depends on (rather than importing) `bit`. Again, this impacted `data.table`'s tests which mimic a user's environment; not `data.table` itself per se.
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     We have requested that CRAN policy be modified to require that reverse dependency testing include packages which `Suggest` the package. Had this been the case, reverse dependency testing of `bit64` would have caught the impact on `data.table` before release.
 
 2. `?.NGRP` now displays the help page as intended, [#4946](https://github.com/Rdatatable/data.table/issues/4649). Thanks to @KyleHaynes for posting the issue, and Cole Miller for the fix. `.NGRP` is a symbol new in v1.13.0; see below in this file.