Merge branch 'master' into testing

diff --cc sdk/pom.xml
index b7646bbdb08dc64c65cf81537a5664676d2e4369,9ba6041b5450b43d42097a3c1a27261c7f47b09f..5d0a240fd35086bc2436be5268963f2a7cc3b0a4
--- 1/sdk/pom.xml
--- 2/sdk/pom.xml
+++ b/sdk/pom.xml
@@@ -6,7 -6,7 +6,7 @@@
        <parent>
                <groupId>org.argeo.commons</groupId>
                <artifactId>argeo-commons</artifactId>
-               <version>2.3.1-SNAPSHOT</version>
 -              <version>2.3-SNAPSHOT</version>
++              <version>2.1-SNAPSHOT</version>
                <relativePath>..</relativePath>
        </parent>
        <artifactId>sdk</artifactId>