Check XRef's Catalog for being a Dict
Resolves: #2189816

Check isDict before calling getDict 2
Resolves: #2189837

Check isDict before calling getDict
Resolves: #2189823

Don't crash in broken documents
Resolves: #2189844

Check for overflow when computing number of symbols
in JBIG2 text region
Resolves: #2126361

Don't run out of file for Hints
Rebuild for #2096452
Resolves: #2090969, #2096452

Fix opening files with streams with wrong generations
Resolves: #2002575

Fix crash when processing dates of embedded files
Resolves: #1981108

Improve python3 build dependency
Resolves: #1896335

Rebase poppler to 20.11.0
Modify/remove patches as needed
Resolves: #1644423

Fix crash on broken file in tilingPatternFill()
Resolves: #1801341

Coverity scan related fixes
Related: #1618766

Check whether input is RGB in PSOutputDev::checkPageSlice()
also when using "-optimizecolorspace" flag
Resolves: #1697576

Check whether input is RGB in PSOutputDev::checkPageSlice()
Resolves: #1697576

Ignore dict Length if it is broken
Resolves: #1733027

Fail gracefully if not all components of JPEG2000Stream
have the same size
Resolves: #1723505