Upgrade commons-exec from 1.3 to 1.4.0 (fixes #9, yay!)

pom.xml

@@ -253,7 +253,7 @@
     <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-exec</artifactId>
-      <version>1.3</version>
+      <version>1.4.0</version>
     </dependency>
     <dependency>
       <!-- Just for its CircularFifoQueue... -->

src/main/java/ch/vorburger/exec/ExtendedDefaultExecutor.java

@@ -22,6 +22,7 @@
 import java.util.function.Function;
 import org.apache.commons.exec.DefaultExecutor;
 
+@SuppressWarnings("deprecation") // TODO https://github.com/vorburger/ch.vorburger.exec/issues/189
 class ExtendedDefaultExecutor extends DefaultExecutor {
 
     private Function<Integer, Boolean> exitValueChecker;

src/main/java/ch/vorburger/exec/ManagedProcess.java

@@ -108,6 +108,7 @@ public class ManagedProcess implements ManagedProcessState {
      * @param stdErrs StandardError from the console
      * @param listener A <tt>ManagedProcessListener</tt> which is notified when process completes or fails
      */
+    @SuppressWarnings("deprecation") // TODO https://github.com/vorburger/ch.vorburger.exec/issues/189
     ManagedProcess(CommandLine commandLine, File directory, Map<String, String> environment,
             InputStream input, boolean destroyOnShutdown, int consoleBufferMaxLines,
             OutputStreamLogDispatcher outputStreamLogDispatcher,

src/main/java/ch/vorburger/exec/StopCheckExecuteWatchdog.java

@@ -31,6 +31,7 @@ public class StopCheckExecuteWatchdog extends ExecuteWatchdog {
      *         the timeout for the process in milliseconds. It must be
      *         greater than 0 or 'INFINITE_TIMEOUT'
      */
+    @SuppressWarnings("deprecation") // TODO https://github.com/vorburger/ch.vorburger.exec/issues/189
     public StopCheckExecuteWatchdog(long timeout) {
         super(timeout);
     }