v4.0.0

Breaking changes:

• No longer export a default object in index.ts
• Require qpdf 11+
• Might also be breaking because if there is no password specified in decrypt.ts, it no longer pushes the --password="" argument

What's Changed

• breaking: v4 by @Sparticuz in #24

Full Changelog: v3.0.0...v4.0.0