Issue/327 versioning (#345)

* Switch to semver format

* Rewrite new version check to use Github Releases and cron

* Styling

* Remove v from in front of version

* New version check test fix

* Uncomment test case

composer.json

@@ -13,7 +13,6 @@
         "ext-mbstring": "*",
         "ext-pdo": "*",
         "composer/composer": "1.8.*",
-        "composer/semver": "1.4.*",
         "laravel/framework": "5.8.*",
         "akaunting/money": "1.0.*",
         "anhskohbo/no-captcha": "3.0.*",
@@ -46,12 +45,13 @@
         "prettus/l5-repository": "2.6.*",
         "santigarcor/laratrust": "5.2.*",
         "sebastiaanluca/laravel-helpers": "3.*",
+        "semver/semver": "^1.1",
         "spatie/laravel-pjax": "1.3.*",
+        "spatie/valuestore": "^1.2",
         "symfony/polyfill-iconv": "^1.11",
         "theiconic/php-ga-measurement-protocol": "2.7.*",
         "tivie/php-os-detector": "1.1.*",
         "toin0u/geotools-laravel": "1.0.*",
-        "vierbergenlars/php-semver": "3.0.*",
         "waavi/sanitizer": "1.0.*",
         "webpatser/laravel-uuid": "3.*"
     },