RELEASE: v2.33.3

[tmedwards]

• Fixed Safari v14 breaking detection of various audio formats.
• Minor improvement to how <<numberbox>> handles decimal numbers—mostly for Firefox.
• Documentation changes:
  • Fixed an oopsie in the Harlowe guide.
  • Added an entry for UIBar.update().
  • Added a guide for the Definitely Typed TypeScript bindings for SugarCube's APIs.
  • Added additional warnings about Twine 2's automatic passage creation feature.
• Development changes:
  • Fixed Node.js v14 API change that broke the build script.
  • Updated development dependencies.