Added support for Laravel 6.3 and 6.4. (refs kkomelin#35)

Author: kkomelin

.travis.yml

@@ -8,7 +8,7 @@ php:
 env:  
   - LARAVEL_VERSION=5.8.*
   - LARAVEL_VERSION=6.0.*
-  - LARAVEL_VERSION=6.2.*
+  - LARAVEL_VERSION=6.4.*
 
 matrix:
   fast_finish: true

composer.json

@@ -10,8 +10,8 @@
   "require": {
     "php": ">=5.4.0",
     "ext-json": "*",
-    "illuminate/support": "5.4.*|5.5.*|5.6.*|5.7.*|5.8.*|6.0.*|6.1.*|6.2.*",
-    "illuminate/translation": "5.4.*|5.5.*|5.6.*|5.7.*|5.8.*|6.0.*|6.1.*|6.2.*",
+    "illuminate/support": "5.4.*|5.5.*|5.6.*|5.7.*|5.8.*|6.0.*|6.1.*|6.2.*|6.3.*|6.4.*",
+    "illuminate/translation": "5.4.*|5.5.*|5.6.*|5.7.*|5.8.*|6.0.*|6.1.*|6.2.*|6.3.*|6.4.*",
     "symfony/finder": "^3.2|^4.0"
   },
   "autoload": {