Added support for Java 15.

Author: CollinAlpert

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.github.collinalpert</groupId>
     <artifactId>lambda2sql</artifactId>
-    <version>2.2.2</version>
+    <version>2.3.0</version>
     <packaging>jar</packaging>
 
     <name>lambda2sql</name>
@@ -61,13 +61,13 @@
         <dependency>
             <groupId>com.github.collinalpert</groupId>
             <artifactId>expressions</artifactId>
-            <version>2.5</version>
+            <version>2.6.0</version>
         </dependency>
 
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>
-            <version>5.6.2</version>
+            <version>5.7.0</version>
             <scope>test</scope>
         </dependency>