fix: clean up register

Author: mychidarko

src/Auth.php

@@ -195,6 +195,10 @@ public function login(array $credentials): bool
             unset($credentials[$passwordKey]);
         }
 
+        if (isset($credentials['email'])) {
+            $credentials['email'] = strtolower($credentials['email']);
+        }
+
         try {
             $user = $this->db->select($table)->where($credentials)->first();
 
@@ -252,6 +256,10 @@ public function register(array $userData): bool
             $userData['updated_at'] = $now;
         }
 
+        if (isset($userData['email'])) {
+            $userData['email'] = strtolower($userData['email']);
+        }
+
         if (isset($credentials[Config::get('id.key')])) {
             $userData[Config::get('id.key')] = is_callable($userData[Config::get('id.key')])
                 ? call_user_func($userData[Config::get('id.key')])
@@ -306,6 +314,10 @@ public function update(array $userData): bool
             $userData['updated_at'] = (new Date())->tick()->format(Config::get('timestamps.format'));
         }
 
+        if (isset($userData['email'])) {
+            $userData['email'] = strtolower($userData['email']);
+        }
+
         if (count(Config::get('unique')) > 0) {
             foreach (Config::get('unique') as $unique) {
                 if (!isset($userData[$unique])) {
@@ -482,6 +494,10 @@ public function createUserFor($userData)
             $userData['updated_at'] = $now;
         }
 
+        if (isset($userData['email'])) {
+            $userData['email'] = strtolower($userData['email']);
+        }
+
         if (isset($credentials[Config::get('id.key')])) {
             $userData[Config::get('id.key')] = is_callable($userData[Config::get('id.key')])
                 ? call_user_func($userData[Config::get('id.key')])