mozilla/pdf.js

Prepare the next major version of PDF.js, which involves removing support for older browsers.

Streams API with PDF.js, makes it more faster and memory efficient. Passing data incrementally from worker to main thread increases the speed of processing. Using Streams API instead of xhr in networking reduces the memory usage. As defined at https://docs.google.com/document/d/1yTPvPBhGkFn7XUntAt8wdVPckxHovYylNAIJOGnGRXc , owner is @mukulmishra18.

Improve SVG backend: use in the viewer and for printing.

Improve AcroForm support: typing and printing.