Support Constructor Property Promotion

• Add support for constructor property promotion
• Make the Literal component more flexible (by @mcg-web)
• Change the way empty blocks ({}) are rendered on different components

v0.1.5: Support PHP 8

• Change composer requirements to support PHP 8
• Add missing PHPDoc blocks
• Add missing type-hints
• Make some constructors final
• Other minor fixes

v0.1.4

Fix stringifier bug

v0.1.3: Add collection ordering feature

- Fix cs
- Add setter for `withKeys` option

v0.1.2

Allow binding multiple closure vars at once

v0.1.1

Allow adding multiple function arguments at once

First release

v0.1

Remove `dev` from the title