New Features (ENH):
-  Add PageObject._get_fonts (#1083)
-  Add support for indexed color spaces / BitsPerComponent for decoding PNGs (#1067)

Performance Improvements (PI):
-  Use iterative DFS in PdfWriter._sweep_indirect_references (#1072)

Bug Fixes (BUG):
-  Let Page.scale also scale the crop-/trim-/bleed-/artbox (#1066)
-  Column default for CCITTFaxDecode (#1079)

Robustness (ROB):
-  Guard against None-value in _get_outlines (#1060)

Documentation (DOC):
-  Stamps and watermarks (#1082)
-  OCR vs PDF text extraction (#1081)
-  Python Version support
-  Formatting of CHANGELOG

Developer Experience (DEV):
-  Cache downloaded files (#1070)
-  Speed-up for CI (#1069)

Maintenance (MAINT):
-  Set page.rotate(angle: int) (#1092)
-  Issue #416 was fixed by #1015 (#1078)

Testing (TST):
-  Image extraction (#1080)
-  Image extraction (#1077)

Code Style (STY):
-  Apply black
-  Typo in Changelog

Full Changelog: 2.4.2...2.4.3