Remove blank lines from merged commits before generating merge commit message

Author: aik099

CHANGELOG.md

@@ -19,6 +19,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - The `config` command groups configuration settings by a command.
 - The `changelog` command will show actually used app version instead of `Unreleased` word, when used version isn't mentioned in a changelog. 
 - The executed SVN command idle timeout changed from 20 minutes to 3 minutes.
+- The `commit` command remove empty lines of merged commits, when building grouped merge commit message. 
 
 ### Fixed
 - The non-merged revision table was shown after a successful auto-commit, when merge conflict was resolved.

src/SVNBuddy/Repository/CommitMessage/GroupByBugMergeTemplate.php

@@ -49,7 +49,9 @@ protected function generateGroupBody($path, array $revisions, $repository_url, $
 			$bug_title_added = false;
 
 			foreach ( $bug_revisions as $revision ) {
-				$commit_message_parts = explode(PHP_EOL, rtrim($revisions_data[$revision]['msg']), 2);
+				$commit_message_parts = explode(PHP_EOL, $revisions_data[$revision]['msg']);
+				$commit_message_parts = array_filter($commit_message_parts); // Removes empty lines.
+
 				$bug_title = array_shift($commit_message_parts);
 				$commit_message = $commit_message_parts ? implode(PHP_EOL, $commit_message_parts) : '(no details)';