Replace tabs in tables with 4 spaces (wp-cli#181)

* Replace tabs in tables with 4 spaces

* Move to `padColumn`

* Cast to string

Author: swissspidy

lib/cli/table/Ascii.php

@@ -198,6 +198,7 @@ public function row( array $row ) {
 	}
 
 	private function padColumn($content, $column) {
+		$content = str_replace( "\t", '    ', (string) $content );
 		return $this->_characters['padding'] . Colors::pad( $content, $this->_widths[ $column ], $this->isPreColorized( $column ) ) . $this->_characters['padding'];
 	}