docs: Updated CHANGELOG/README

Change-Id: I037f934ed30d0e96f09872ad032be21ea764127e

CHANGELOG.adoc

@@ -2,6 +2,20 @@
 
 All notable changes to this project will be documented in this file.
 
+== 2.21
+
+- Updated Groovy to 3.0.8
+- Updated gmavenplus-plugin
+- Updated mockito to 3.8.0
+- Switch to github actions for CI builds
+
+
+== 2.20
+
+- #118 - Fixes tile ordering for embedded/nested <tiles>
+- #116 - Copy distribution management URLs if possible.
+
+
 == 2.19
 
 Security update for Groovy 3.0.7.

README.adoc

@@ -1,4 +1,4 @@
-= Tiles Maven Plugin - Version 2.19
+= Tiles Maven Plugin - Version 2.21
 
 image:https://travis-ci.org/repaint-io/maven-tiles.svg[caption="Travis Build Status"] image:https://badges.gitter.im/repaint-io/maven-tiles.svg[link="https://gitter.im/repaint-io/maven-tiles?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge"]
 
@@ -63,7 +63,7 @@ you specify a configuration.
       <plugin>
         <groupId>io.repaint.maven</groupId>
         <artifactId>tiles-maven-plugin</artifactId>
-        <version>2.19</version>
+        <version>2.21</version>
         <extensions>true</extensions>
         <configuration>
           <filtering>false</filtering>
@@ -309,7 +309,7 @@ be applied (in this case before `P`) resulting in the desired structure:
     <plugin>
       <groupId>io.repaint.maven</groupId>
       <artifactId>tiles-maven-plugin</artifactId>
-      <version>2.19</version>
+      <version>2.21</version>
       <configuration>
         <applyBefore>group:P</applyBefore>
         <tiles>