Merge branch 'master' of github.com:FasterXML/jackson-datatypes-collections

Author: cowtowncoder

guava/pom.xml

@@ -26,6 +26,9 @@ Guava (http://code.google.com/p/guava-libraries/) types (currently mostly just c
   </contributors>
 
   <properties>
+    <!-- In Jackson 2.12 was guava 21
+                    2.13 ... ?
+      -->
     <version.guava>25.1-jre</version.guava>
 
     <!-- 11-Sep-2015, tatu: As per [datatype-guava#80] -->