Merge branch '45-remove-restart-undo-warnings' into 'main'

Resolve "Remove "Restart"/"Undo"-Warnings"

Closes #45

See merge request !37

Makefile

@@ -29,7 +29,7 @@ html: Makefile.coq
 	VFILES="$(shell echo $(COMPONENTS) | awk '$(GENCoqDoc)')" $(MAKE) -e -f Makefile.coq html
 
 Makefile.coq: _CoqProject
-	coq_makefile -f $< -o $@ COQDOCEXTRAFLAGS = "--lib-name $(PROJNAME)"
+	coq_makefile -f $< -o $@ COQDOCEXTRAFLAGS = "--lib-name $(PROJNAME)" -arg "-async-proofs-cache force"
 
 clean: Makefile.coq
 	$(MAKE) -f $< cleanall