Improvements 🔧

• Cover ExprPrinter by BC promise (#1794), thanks @staabm!
• Improve isset specification in falsy scope (#1781), thanks @herndlm!s
• Update phpstan/phpdoc-parser to 1.9.0 (phpstan/phpstan-src@fd94186)

Bugfixes 🐛

• Do not drop original specified expression in TypeSpecifier (#1793), #8076, thanks @herndlm!
• Preserve accessory types in MutatingScope::generalizeType (#1732), #8015, thanks @herndlm!
• Specify types on get_parent_class() (#1383), #5552, thanks @staabm!
• Do not load Composer\InstalledVersions to parse PHPStan version (phpstan/phpstan-src@acbb55b), #8117

Function signature fixes 🤖

• Fix zadd argument order (#1779), thanks @araab!
• Fix zscan return types (#1780), thanks @araab!
• XMLWriter::startElementNS() $namespace arg is nullable (#1772), thanks @staabm!