rename "paper" to "report"

Makefile

-.PHONY: doc doc-open fmt fmt-check test clean-paper paper
+.PHONY: doc doc-open fmt fmt-check test clean-report report
 
 DOC_OPTIONS="--all-features --document-private-items --workspace"
 
@@ -17,8 +17,8 @@ fmt-check:
 test:
 	cargo test -- --nocapture
 
-paper:
-	latexmk -shell-escape -output-directory=paper/ -pdf paper/main.tex
+report:
+	latexmk -shell-escape -output-directory=report/ -pdf report/main.tex
 
-clean-paper:
-	rm -rf paper/main.aux paper/main.fdb_latexmk paper/main.fls paper/main.log paper/main.out paper/main.pdf paper/main.synctex.gz paper/main.bbl paper/main.blg paper/main.pyg paper/figures/*.dep paper/figures/*.dpth paper/figures/*.log paper/figures/*.md5 paper/figures/*.pdf paper/figures/*.run.xml paper/main.auxlock paper/main.bcf paper/main.run.xml
+clean-report:
+	rm -rf report/main.aux report/main.fdb_latexmk report/main.fls report/main.log report/main.out report/main.pdf report/main.synctex.gz report/main.bbl report/main.blg report/main.pyg report/figures/*.dep report/figures/*.dpth report/figures/*.log report/figures/*.md5 report/figures/*.pdf report/figures/*.run.xml report/main.auxlock report/main.bcf report/main.run.xml