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

app/Repositories/KvpRepository.php

@@ -0,0 +1,69 @@
+<?php
+
+namespace App\Repositories;
+
+use Spatie\Valuestore\Valuestore;
+
+class KvpRepository
+{
+    private $valueStore;
+
+    public function __construct()
+    {
+        $this->valueStore = Valuestore::make(config('phpvms.kvp_storage_path'));
+    }
+
+    /**
+     * @param $key
+     * @param null $default
+     *
+     * @return array|string|null
+     */
+    public function retrieve($key, $default = null)
+    {
+        return $this->get($key, $default);
+    }
+
+    /**
+     * Get a value from the KVP store
+     *
+     * @param string $key
+     * @param mixed  $default default value to return
+     *
+     * @return array|string|null
+     */
+    public function get($key, $default = null)
+    {
+        if (!$this->valueStore->has($key)) {
+            return $default;
+        }
+
+        return $this->valueStore->get($key);
+    }
+
+    /**
+     * @alias store($key,$value)
+     *
+     * @param string $key
+     * @param mixed  $value
+     *
+     * @return null
+     */
+    public function save($key, $value)
+    {
+        return $this->store($key, $value);
+    }
+
+    /**
+     * Save a value to the KVP store
+     *
+     * @param $key
+     * @param $value
+     *
+     * @return null
+     */
+    public function store($key, $value)
+    {
+        return $this->valueStore->put($key, $value);
+    }
+}