Add Psalm 6 support, drop Psalm 4 support

This release adds support for Psalm 6, dropping support for Psalm 4.

What's Changed

• Update README.md by @sander-bol in #128
• Replace deprecated ::set-output by @weirdan in #132
• Dependabot updates for GH actions by @weirdan in #133
• Bump actions/checkout from 2 to 3 by @dependabot in #134
• Bump actions/cache from 2 to 3 by @dependabot in #135
• Switch to MixedReturnStatement, drop Psalm 4 support by @danog in #142

New Contributors

• @sander-bol made their first contribution in #128
• @dependabot made their first contribution in #134

Full Changelog: 0.18.4...0.19.0

0.18.4

What's Changed

• Allow Psalm 5.0 by @ddeboer in #127

New Contributors

• @ddeboer made their first contribution in #127

Full Changelog: 0.18.3...0.18.4

Fix typo

What's Changed

• Fix typo, it turns out $_ is used later on as a ref parameter by @danog in #126

Full Changelog: 0.18.2...0.18.3

Fix version detection

What's Changed

• Dumb version detection by @danog in #125

Full Changelog: 0.18.1...0.18.2

Allow using on 5.x-dev

Merge pull request #124 from danog/patch-1

Allow running in PR

Compatibility release

What's Changed

• [composer.json] allow Psalm 5 beta by @someniatko in #122
• Immutable refactoring by @danog in #123

New Contributors

• @someniatko made their first contribution in #122
• @danog made their first contribution in #123

Full Changelog: 0.17.0...0.18.0

General release

What's Changed

• Improve provider non-optional argument phrasing by @AndrolGenhald in #118
• Fix tests for new version psalm by @mougrim in #119
• Add getMockForAbstractClass stub by @VincentLanglet in #120

New Contributors

• @AndrolGenhald made their first contribution in #118
• @mougrim made their first contribution in #119

Full Changelog: 0.16.1...0.17.0

Remove adapters for older Psalm versions

Fixed

• (#112) unused adapters for older Psalm versions were removed

Use new Psalm API

Features

• (#111) compatibility with future Psalm 5

Correct the namespace of RuntimeException

Fixes

• (#109) @weph fixed namespace of RuntimeException which is required to allow the plugin to be used with checkForThrowsDocblock Psalm option.