feat: 9.5.9

.gitignore

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+*~
+.*.sw?
+.sw?
+/Makefile
+/TAGS
+/a6le/
+/a6nt/
+/a6osx/
+/bin/
+/i3le/
+/i3nt/
+/i3osx/
+/ta6le/
+/ta6nt/
+/ta6osx/
+/ti3le/
+/ti3nt/
+/ti3osx/
+/xc-*/
+*.*run
+/csug/math/csug/
+/csug/Makefile
+/csug/*.aux
+/csug/*.html
+/csug/*.tex
+/csug/csug.ans
+/csug/csug.bbl
+/csug/csug.blg
+/csug/*.haux
+/csug/csug.htoc
+/csug/*.idx
+/csug/csug.ilg
+/csug/csug.ind
+/csug/csug.pdf
+/csug/*.rfm
+/csug/csug.sfm
+/csug/csug.toc
+/csug/*.hidx
+/csug/libslisted*
+/csug/libsrecorded*
+/csug/*.log
+/release_notes/math/release_notes/
+/release_notes/Makefile
+/release_notes/*.tex
+/release_notes/*.aux
+/release_notes/*.haux
+/release_notes/*.html
+/release_notes/*.htoc
+/release_notes/*.htoc
+/release_notes/*.log
+/release_notes/release_notes.pdf