Upgrade scalac-scoverage-plugin to 2.2.0 (Scala 2.12.20 support)

Author: jozic

README.md

@@ -127,7 +127,7 @@ It can be configured by defining the `scalacPluginVersion` plugin configuration
 ```xml
 <project>
     <properties>
-        <scoverage.scalacPluginVersion>2.1.1</scoverage.scalacPluginVersion>
+        <scoverage.scalacPluginVersion>2.2.0</scoverage.scalacPluginVersion>
     </properties>
 </project>
 ```
@@ -143,7 +143,7 @@ or
                 <artifactId>scoverage-maven-plugin</artifactId>
                 <version>${scoverage.plugin.version}</version>
                 <configuration>
-                    <scalacPluginVersion>2.1.1</scalacPluginVersion>
+                    <scalacPluginVersion>2.2.0</scalacPluginVersion>
                     <!-- other parameters -->
                 </configuration>
              </plugin>

pom.xml

@@ -97,7 +97,7 @@ under the License.
         <maven-reporting-api.version>3.1.1</maven-reporting-api.version>
         <doxia.version>1.11.1</doxia.version>
 
-        <scalac-scoverage-plugin.version>2.1.1</scalac-scoverage-plugin.version>
+        <scalac-scoverage-plugin.version>2.2.0</scalac-scoverage-plugin.version>
         <scalac-scoverage-plugin.scala.version>2.13</scalac-scoverage-plugin.scala.version>
 
         <nexus.url>https://oss.sonatype.org</nexus.url>

src/main/java/org/scoverage/plugin/SCoveragePreCompileMojo.java

@@ -133,7 +133,7 @@ public class SCoveragePreCompileMojo
      *
      * @since 1.0.0
      */
-    @Parameter( property = "scoverage.scalacPluginVersion", defaultValue = "2.1.1" )
+    @Parameter( property = "scoverage.scalacPluginVersion", defaultValue = "2.2.0" )
     private String scalacPluginVersion;
 
     /**