New Features (ENH):
-  Add support for pathlib as input for PdfReader (#979)

Performance Improvements (PI):
-  Optimize read_next_end_line (#646)

Bug Fixes (BUG):
-  Adobe Acrobat \'Would you like to save this file?\' (#970)

Documentation (DOC):
-  Notes on annotations (#982)
-  Who uses PyPDF2
-  intendet \xe2\x9e\x94 in robustness page  (#958)

Maintenance (MAINT):
-  pre-commit / requirements.txt updates (#977)
-  Mark read_next_end_line as deprecated (#965)
-  Export `PageObject` in PyPDF2 root (#960)

Testing (TST):
-  Add MCVE of issue #416 (#980)
-  FlateDecode.decode decodeParms (#964)
-  Xmp module (#962)
-  utils.paeth_predictor (#959)

Code Style (STY):
-  Use more tuples and list/dict comprehensions (#976)

Full Changelog: 2.1.0...2.1.1