v0.13.0

• feat: update parser and add arrow function support (#1277)

• fix(switch): inconsistent line spreading (#1256)

• fix(retif): correct parentheses for bin in retif (#1257)

• fix: shorthand echo as first node (#1266)

• fix: flexible heredoc/nowdoc syntax (#1269)

• fix: namespace followed by inline node (#1265)

• fix: insert pragma when first docblock mid-file (#1310)

• dependency updates