Merge branch '2.11' into 2.12

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -25,7 +25,7 @@ Active Maintainers:
 - Add Gradle Module Metadata (https://blog.gradle.org/alignment-with-gradle-module-metadata)
 - Update "preferred" Guava version to 21.0
 
-2.11.4 (not yet released)
+2.11.4 (12-Dec-2020)
 
 * Add missing "LICENSE" file for Guava- and Eclipse-collections modules
 * Add missing SPI metadata for auto-detecti Eclipse-collections module