Switching to Version 20.0.0 since it matches the 2.0 of Spring boot so nicely and gives us 16 Major Releases time before the Spring Boot 1.x release train overtakes the Spring Boot 2 one

Author: BGehrels

README.md

@@ -40,8 +40,8 @@ You may of course always setup a fresh system with the newest version.
 
 ## Prerequisites
 
-This library was tested with Spring Boot 2.0.3.RELEASE and relies on an existing configured PostgreSQL DataSource. If
-you are still using Spring Boot 1.x, please use version 4.2.0 ([Release Notes](https://github.com/zalando-nakadi/nakadi-producer-spring-boot-starter/releases/tag/4.2.0), [Documentation](https://github.com/zalando-nakadi/nakadi-producer-spring-boot-starter/blob/4.2.0/README.md)) versions of this library.
+This library was tested with Spring Boot 2.0.3.RELEASE and relies on an existing configured PostgreSQL DataSource. 
+**If you are still using Spring Boot 1.x, please use versions < 20.0.0, they are still actively maintained ([Documentation](https://github.com/zalando-nakadi/nakadi-producer-spring-boot-starter/tree/spring-boot-1)).**
 
 This library also uses:
 

nakadi-producer-spring-boot-starter/pom.xml

@@ -10,7 +10,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>nakadi-producer-reactor</artifactId>
-        <version>5.0.0-SNAPSHOT</version>
+        <version>20.0.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>nakadi-producer-spring-boot-starter</artifactId>

nakadi-producer-starter-spring-boot-2-test/pom.xml

@@ -10,7 +10,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>nakadi-producer-reactor</artifactId>
-        <version>5.0.0-SNAPSHOT</version>
+        <version>20.0.0-SNAPSHOT</version>
     </parent>
 
     <dependencies>

nakadi-producer/pom.xml

@@ -10,7 +10,7 @@
     <parent>
         <groupId>org.zalando</groupId>
         <artifactId>nakadi-producer-reactor</artifactId>
-        <version>5.0.0-SNAPSHOT</version>
+        <version>20.0.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>nakadi-producer</artifactId>

pom.xml

@@ -15,7 +15,7 @@
 
     <artifactId>nakadi-producer-reactor</artifactId>
     <groupId>org.zalando</groupId>
-    <version>5.0.0-SNAPSHOT</version>
+    <version>20.0.0-SNAPSHOT</version>
     <packaging>pom</packaging>
     <name>Nakadi Event Producer Reactor</name>