v4.0.0

• Typescript rewrite! 903e923
  • no more lagging/outdated types from DefinitelyTyped (@types/google-spreadsheet)
  • refactor GoogleSpreadsheetRow to be more TS friendly
  • add new typed value getters/setters to GoogleSpreadsheetCell (stringValue, boolValue, numberValue)
  • cell.formulaError -> cell.errorValue
  • refactor authentication to rely directly on google-auth-library as a peer dependency
  • support Application Default Credentials (auto inject credentials in some environments)
  • refactor document creation into static method, similar auth setup
  • support basic sharing / permissions management (drive api)
  • support document delete
  • replaced GoogleSpreadsheetFormulaError with GoogleSpreadsheetCellErrorValue and now handles all possible cell error types
  • fully deprecated sheet.getInfo,
• chore: set up release tooling (release-it, auto-changelog, commitizen) dc831e3