* Add support for FEATURES=preserve-libs which preserves libraries when the
sonames change during upgrade or downgrade, and the @preserved-rebuild
package set which rebuilds consumers of preserved libraries.
+* Improve handling of repositories/overlays for cases in which the same ebuild
+ is provided by multiple repositories but with different masking status, and
+ support for repository constraints on atoms (atom::repo) in configuration
+ files.
* Add EAPI 4_pre1 support, for testing purposes.
portage-2.1.9