kint-php/kint 4.0 on GitHub

The folder is now off by default and can be enabled via the existing setting
Much improved search functionality
The PSR-11 service container is shallow-blacklisted by default. This will vastly improve performance on most frameworks such as symfony & laravel by stopping recursive parsing at the DI container unless you dump it explicitly
TracePlugin now supports blacklisting stack frames from paths, such as your /vendor/ folder
Numeric arrays with more than 1000 items in them will only dump the first 50 recursively. You can disable or configure this with ArrayLimitPlugin
Supports PHP 8.1
Lots of little stuff

Minimum supported PHP version is now 5.6
Kint::$max_depth has been renamed Kint::$depth_limit to match internals
Kint\Renderer\RichRenderer::$object_plugins has been renamed $value_plugins
The Object namespace has been renamed Zval - So certain class statics will have been renamed (eg. Kint\Object\BlobObject::$char_encodings to Kint\Zval\BlobValue::$char_encodings)
d(1) special case has been removed (Didn't work in edge cases) Call Kint::trace() instead
For plugin development there have been a lot of internal changes
- The whole Object namespace has been renamed Zval in anticipation of naming conflicts
- parseDeep has been removed