20200720

Added

• Support for painting multiple rectangles at once (#371)

Fixed

• Validate image object in do_EI is a PDFStream (#451)

Changed

• Hiding fallback xref by default from dumppdf.py output (#431)
• Raise a warning instead of an error when extracting text from a non-extractable PDF (#350)
• Switched from pycryptodome to cryptography package for AES decryption (#456)