0.39.0

Breaking changes

• Support multiple names in DROP PROCEDURE & DROP FUNCTION (02cb895, cbd0e15)
• Use FunctionSignature type in AlterProcedureStmt & AlterFunctionStmt (ebeae15, 88d220d)
• Rename DropFunctionStmt.functions to .signatures (eac1972)
• Don't recognize paren-less functions as plain function calls (15ada0f)

Other changes

• Upgrade to TypeScript 5.x
• Support SET as column name (but not as implicit alias)
• Support interval units (year, month, ...) as column names