Aggiornamento requisito PHP 5.6

Aggiornamento del requisito minimo a PHP 5.6, come discusso in #92.

composer.json

@@ -22,7 +22,7 @@
     }],
     "type": "project",
     "require": {
-        "php": ">=5.4",
+        "php": ">=5.6",
         "aluguest/ical-easy-reader": "^1.5",
         "danielstjules/stringy": "^3.1",
         "ezyang/htmlpurifier": "^4.8",
@@ -30,16 +30,16 @@
         "ifsnop/mysqldump-php": "^2.3",
         "intervention/image": "^2.3",
         "ircmaxell/password-compat": "^1.0",
-        "maximebf/debugbar": "~1.14.1",
+        "maximebf/debugbar": "^1.15",
         "monolog/monolog": "^1.22",
-        "mpdf/mpdf": "^6.1",
+        "mpdf/mpdf": "^7.0",
         "paragonie/random_compat": "^2.0",
-        "phpmailer/phpmailer": "^5.2",
+        "phpmailer/phpmailer": "^6.0",
         "spipu/html2pdf": "^5.0",
         "symfony/filesystem": "^3.3",
         "symfony/finder": "^3.3",
-        "symfony/translation": "~3.3.0",
-        "symfony/var-dumper": "~2.8"
+        "symfony/translation": "^3.3",
+        "symfony/var-dumper": "^3.3"
     },
     "autoload": {
         "psr-4": {

gulpfile.js

@@ -253,8 +253,7 @@ gulp.task('release', function () {
     del([
         './vendor/tecnickcom/tcpdf/fonts/*',
         '!./vendor/tecnickcom/tcpdf/fonts/*helvetica*',
-        './vendor/mpdf/mpdf/iccprofiles/*',
-        './vendor/mpdf/mpdf/qrcode/*',
+        './vendor/mpdf/mpdf/tmp/*',
         './vendor/mpdf/mpdf/ttfonts/*',
         './vendor/maximebf/debugbar/src/DebugBar/Resources/vendor/*',
     ]);

pdfgen.php

@@ -157,19 +157,18 @@ if (!$old_format) {
     $settings['format'] = is_string($settings['format']) ? $settings['format'].($settings['orientation'] == 'L' ? '-L' : '') : $settings['format'];
 
     // Instanziamento dell'oggetto mPDF
-    $mpdf = new mPDF(
-        'c',
-        $settings['format'],
-        $settings['font-size'],
-        'helvetica',
-        $settings['margins']['left'],
-        $settings['margins']['right'],
-        $settings['margins']['top'] + $settings['header-height'],
-        $settings['margins']['bottom'] + $settings['footer-height'],
-        $settings['margins']['top'],
-        $settings['margins']['bottom'],
-        $settings['orientation']
-    );
+    $mpdf = new \Mpdf\Mpdf([
+        'mode' => 'c',
+        'format' => $settings['format'],
+        'orientation' => $settings['orientation'],
+        'font-size' => $settings['font-size'],
+        'margin_left' => $settings['margins']['left'],
+        'margin_right' => $settings['margins']['right'],
+        'margin_top' => $settings['margins']['top'] + $settings['header-height'],
+        'margin_bottom' => $settings['margins']['bottom'] + $settings['footer-height'],
+        'margin_header' => $settings['margins']['top'],
+        'margin_footer' => $settings['margins']['bottom'],
+    ]);
 
     // Impostazione di header e footer
     $mpdf->SetHTMLFooter($foot);

src/Mail.php

@@ -5,7 +5,7 @@
  *
  * @since 2.3
  */
-class Mail extends PHPMailer
+class Mail extends PHPMailer\PHPMailer\PHPMailer
 {
     protected $infos = [];