* Migration::upsert() returns void
* Unneeded `@property` tags
* Add missing `null` param/return types
* Null types for db\Query + db\ActiveQuery
* Fixed testSelect
* Null types for Validator
* Several more null types
* One more
* Make AccessRule::$allow always a boolean
It doesn't have any special null handling, so it's safe to default to false
* Validator::$skipOnEmpty is always a boolean
* Catch all throwable from Widget::widget()
* Don't limit $previous args to \Exception
The actual \Exception allows $previous to be any throwable in PHP 7+
* Add Throwable catch block to Instance::get()
* Throwable cleanup
Comment changes only.
- Document \Throwable instead of \Exception wherever appropriate
- Removed redundant exception/error classes when \Throwable is referenced
* Yii::setlogger() accepts null
* ArrayHelper::removeValue() can remove any type of value
* Change default $allow value to false
If ```$htmlLayout``` contains <style> tags with CSS rules,
strip_tags here: https://github.com/yiisoft/yii2/blob/master/framework/mail/BaseMailer.php#L189
won't clean those CSS rules.
Actual html:
```html
<html>
<head>
<style>
.text-secondary {color: #93959A;}
[...]
[Other CSS rules]
[...]
</style>
</head>
<body>
<div>Some content</div>
</body>
</html>
```
Will look this way in TEXT version of Email:
```
.text-secondary {color: #93959A;}
[...]
[Other CSS rules]
[...]
Some content
```
--------------
If TEXT version of Email differs drastically from visible content of HTML version,
it can be result that some penalty points will apply to such mails:
http://wiki.apache.org/spamassassin/Rules/MPART_ALT_DIFF_COUNT
Since it's default behaviour for both yii2-app-advanced and yii2-app-basic (where stripped from tags html used for TextBody),
I believe people will stumble in this for sure, without even knowing that their emails can be penalized.
You can reproduce it by placing CSS styles in email view or layout
and test it here: http://www.mail-tester.com/ (SpamAssassin section).
