[TASK] Update dependencies

* raise minimum TYPO3 version
* raise upper PHP version limit

ext_emconf.php

 <?php
 
-/***************************************************************
- * Extension Manager/Repository config file for ext "lfeditor".
- *
- * Auto generated 01-07-2013 06:06
- *
- * Manual updates:
- * Only the data in the array - everything else is removed by next
- * writing. "version" and "dependencies" must not be touched!
- ***************************************************************/
-
 $EM_CONF[$_EXTKEY] = array(
 	'title' => 'Language File Editor',
 	'description' => 'This module serves several functions for editing of language files.
@@ -49,8 +39,8 @@ Following functions are implemented in this module:
 	'CGLcompliance_note' => '',
 	'constraints' => array(
 		'depends' => array(
-			'php' => '5.3.0-5.6.99',
-			'typo3' => '6.2.15-7.99.99',
+			'php' => '5.3.0-7.0.99',
+			'typo3' => '7.6.12-7.99.99',
 		),
 		'conflicts' => array(
 		),
@@ -61,5 +51,3 @@ Following functions are implemented in this module:
 	'suggests' => array(
 	),
 );
-
-?>
\ No newline at end of file