Update the Makefile to filter more files when running tests (#280)

Makefile

@@ -154,6 +154,8 @@ verify:
 INPUTS_LIST = $(wildcard $(INPUTS_DIR)/*)
 # Remove the committed output files
 INPUTS_LIST := $(filter-out %.out,$(INPUTS_LIST))
+# Remove some temporary files which are inserted by, for instance, Emacs
+INPUTS_LIST := $(filter-out %~,$(INPUTS_LIST))
 # Remove the directory prefix, replace with `test-`
 INPUTS_LIST := $(subst $(INPUTS_DIR)/,test-,$(INPUTS_LIST))