prepare for 4.3.3 release [ci skip]

Author: timmolter

README.md

@@ -102,17 +102,17 @@ Add the following dependencies in your pom.xml file. You will need at least xcha
     <dependency>
       <groupId>org.knowm.xchange</groupId>
       <artifactId>xchange-core</artifactId>
-      <version>4.3.2</version>
+      <version>4.3.3</version>
     </dependency>
     <dependency>
       <groupId>org.knowm.xchange</groupId>
       <artifactId>xchange-examples</artifactId>
-      <version>4.3.2</version>
+      <version>4.3.3</version>
     </dependency>
     <dependency>
       <groupId>org.knowm.xchange</groupId>
       <artifactId>xchange-XYZ</artifactId>
-      <version>4.3.2</version>
+      <version>4.3.3</version>
     </dependency>
 
 For snapshots, add the following repository to your pom.xml file.
@@ -125,7 +125,7 @@ For snapshots, add the following repository to your pom.xml file.
 
 The current snapshot version is: 
 
-    4.3.3-SNAPSHOT
+    4.3.4-SNAPSHOT
 
 ## Building with Maven