Convert the rest of the API to new action architecture

Also make some tweaks:
- Merge SerializeAction::$include and
SerializeAction::$includeAvailable into a keyed boolean array
- Set defaults for SerializeAction::$limit and $limitMax
- Rename SerializeAction::$sortAvailable to $sortFields

src/Core/Handlers/Commands/EditPostCommandHandler.php

@@ -22,14 +22,16 @@ class EditPostCommandHandler
 
         $post->assertCan($user, 'edit');
 
-        if (isset($command->content)) {
-            $post->revise($command->content, $user);
+        if (isset($command->data['content'])) {
+            $post->revise($command->data['content'], $user);
         }
 
-        if ($command->isHidden === true) {
-            $post->hide($user);
-        } elseif ($command->isHidden === false) {
-            $post->restore($user);
+        if (isset($command->data['isHidden'])) {
+            if ($command->data['isHidden']) {
+                $post->hide($user);
+            } else {
+                $post->restore($user);
+            }
         }
 
         event(new PostWillBeSaved($post, $command));

src/Core/Handlers/Commands/EditUserCommandHandler.php

@@ -22,23 +22,28 @@ class EditUserCommandHandler
 
         $userToEdit->assertCan($user, 'edit');
 
-        if (isset($command->username)) {
-            $userToEdit->rename($command->username);
+        if (isset($command->data['username'])) {
+            $userToEdit->rename($command->data['username']);
         }
-        if (isset($command->email)) {
-            $userToEdit->changeEmail($command->email);
+
+        if (isset($command->data['email'])) {
+            $userToEdit->changeEmail($command->data['email']);
         }
-        if (isset($command->password)) {
-            $userToEdit->changePassword($command->password);
+
+        if (isset($command->data['password'])) {
+            $userToEdit->changePassword($command->data['password']);
         }
-        if (isset($command->bio)) {
-            $userToEdit->changeBio($command->bio);
+
+        if (isset($command->data['bio'])) {
+            $userToEdit->changeBio($command->data['bio']);
         }
-        if (! empty($command->readTime)) {
+
+        if (! empty($command->data['readTime'])) {
             $userToEdit->markAllAsRead();
         }
-        if (! empty($command->preferences)) {
-            foreach ($command->preferences as $k => $v) {
+
+        if (! empty($command->data['preferences'])) {
+            foreach ($command->data['preferences'] as $k => $v) {
                 $userToEdit->setPreference($k, $v);
             }
         }

src/Core/Handlers/Commands/PostReplyCommandHandler.php

@@ -34,7 +34,7 @@ class PostReplyCommandHandler
         // opportunity to alter the post entity based on data in the command.
         $post = CommentPost::reply(
             $command->discussionId,
-            $command->content,
+            array_get($command->data, 'content'),
             $user->id
         );
 

src/Core/Handlers/Commands/RegisterUserCommandHandler.php

@@ -20,9 +20,9 @@ class RegisterUserCommandHandler
         // Before persistance, though, fire an event to give plugins an
         // opportunity to alter the post entity based on data in the command.
         $user = User::register(
-            $command->username,
-            $command->email,
-            $command->password
+            array_get($command->data, 'username'),
+            array_get($command->data, 'email'),
+            array_get($command->data, 'password')
         );
 
         event(new UserWillBeSaved($user, $command));

src/Core/Handlers/Commands/StartDiscussionCommandHandler.php

@@ -41,7 +41,7 @@ class StartDiscussionCommandHandler
         // will trigger a domain event that is slightly semantically incorrect
         // in this situation (PostWasPosted), we may need to reconsider someday.
         $post = $this->bus->dispatch(
-            new PostReplyCommand($discussion->id, array_get($command->data, 'content'), $command->user)
+            new PostReplyCommand($discussion->id, $command->user, $command->data)
         );
 
         return $post->discussion;