v0.5.6

Changes

• update github.com/quasilyte/go-ruleguard to v0.3.4 @pierrre (#1041)
• upgrade ruleguard to 0.3.2 @sebastien-rosset (#1032)

Checkers

• appendAssign: also warn on short decl @adlerjohn (#1034)

Docs

• checkers: update sloppyTypeAssert_checker docs @cristaloleg (#1039)
• readme: add MacPorts install info @herbygillot (#1038)

Chore

• framework: fix some linting issues @quasilyte (#1042)