Support laravel 7 (#25)

* Support laravel 7 & drop 5.6 & 5.7

* Fix IE 11 support

* Fix style ci

* Fix travis ci

.travis.yml

@@ -2,22 +2,6 @@ language: php
 
 matrix:
   include:
-    - php: 7.1
-      env: LARAVEL='5.6.*' TESTBENCH='3.6.*' COMPOSER_FLAGS='--prefer-stable'
-    - php: 7.2
-      env: LARAVEL='5.6.*' TESTBENCH='3.6.*' COMPOSER_FLAGS='--prefer-stable'
-    - php: 7.3
-      env: LARAVEL='5.6.*' TESTBENCH='3.6.*' COMPOSER_FLAGS='--prefer-stable'
-    - php: 7.4snapshot
-      env: LARAVEL='5.6.*' TESTBENCH='3.6.*' COMPOSER_FLAGS='--prefer-stable'
-    - php: 7.1
-      env: LARAVEL='5.7.*' TESTBENCH='3.7.*' COMPOSER_FLAGS='--prefer-stable'
-    - php: 7.2
-      env: LARAVEL='5.7.*' TESTBENCH='3.7.*' COMPOSER_FLAGS='--prefer-stable'
-    - php: 7.3
-      env: LARAVEL='5.7.*' TESTBENCH='3.7.*' COMPOSER_FLAGS='--prefer-stable'
-    - php: 7.4snapshot
-      env: LARAVEL='5.7.*' TESTBENCH='3.7.*' COMPOSER_FLAGS='--prefer-stable'
     - php: 7.1
       env: LARAVEL='5.8.*' TESTBENCH='3.8.*' COMPOSER_FLAGS='--prefer-lowest'
     - php: 7.1
@@ -46,6 +30,12 @@ matrix:
       env: LARAVEL='6.*' TESTBENCH='4.*' COMPOSER_FLAGS='--prefer-lowest'
     - php: 7.4snapshot
       env: LARAVEL='6.*' TESTBENCH='4.*' COMPOSER_FLAGS='--prefer-stable'
+    - php: 7.2
+      env: LARAVEL='7.*' TESTBENCH='5.*' COMPOSER_FLAGS='--prefer-stable'
+    - php: 7.3
+      env: LARAVEL='7.*' TESTBENCH='5.*' COMPOSER_FLAGS='--prefer-stable'
+    - php: 7.4snapshot
+      env: LARAVEL='7.*' TESTBENCH='5.*' COMPOSER_FLAGS='--prefer-stable'
   fast_finish: true
   allow_failures:
     - php: 7.4snapshot

composer.json

@@ -16,11 +16,11 @@
         }
     ],
     "require": {
-        "php": "^7.0",
-        "laravel/framework": "~5.5.0|~5.6.0|~5.7.0|~5.8.0|~6.0"
+        "php": "^7.1",
+        "laravel/framework": "~5.8.0|~6.0|~7.0"
     },
     "require-dev": {
-        "orchestra/testbench": "^3.5|~4.0"
+        "orchestra/testbench": "^3.5|~4.0|~5.0"
     },
     "autoload": {
         "psr-4": {

resources/views/trixassets.blade.php

@@ -126,7 +126,7 @@ function laravelTrixConfig (event) {
     var style = document.createElement('style');
         style.type = 'text/css';
 
-    for (var tag of laravelTrixInstanceStyles) {
+    for (var tag in laravelTrixInstanceStyles) {
         style.innerHTML += tag.textContent + ' ';
     }
 

tests/TestCase.php

@@ -15,7 +15,7 @@ class TestCase extends BaseTestCase
     /**
      * Setup the test environment.
      */
-    protected function setUp() :void
+    protected function setUp(): void
     {
         parent::setUp();