update for php 7.4

Author: DeyV

.travis.yml

@@ -11,7 +11,7 @@ php:
     - 7.1
     - 7.2
     - 7.3
-    - 7.4snapshot
+    - 7.4
 
 matrix:
     include:
@@ -33,7 +33,7 @@ matrix:
         - php: 7.0
         - php: 7.3
     allow_failures:
-        - php: 7.4snapshot
+        - php: 7.4
 
 cache:
     directories:

composer.json

@@ -67,13 +67,13 @@
         "ext-zip": "*",
         "ext-gd": "*",
         "phpunit/phpunit": "^4.8.36 || ^7.0",
-        "squizlabs/php_codesniffer": "^2.9",
+        "squizlabs/php_codesniffer": "^2.9 || ^3.5",
         "friendsofphp/php-cs-fixer": "^2.2",
         "phpmd/phpmd": "2.*",
-        "phploc/phploc": "2.* || 3.* || 4.*",
+        "phploc/phploc": "2.* || 3.* || 4.* || 5.*",
         "dompdf/dompdf":"0.8.*",
         "tecnickcom/tcpdf": "6.*",
-        "mpdf/mpdf": "5.7.4 || 6.* || 7.*",
+        "mpdf/mpdf": "5.7.4 || 6.* || 7.* || 8.*",
         "php-coveralls/php-coveralls": "1.1.0 || ^2.0"
     },
     "suggest": {