WIP: Retreived the unit tests (formerly test cases)

Some of these still work, others have just been dummied out for now.

Also added tests for console colors tool, and tweaked it to work
properly.

makefile

@@ -23,6 +23,10 @@ source:
 repl: source
 	$(MAKE) -C repl -k
 
+.PHONY: tests
+tests:
+	$(MAKE) -C tests -k
+
 #util targets
 $(TOY_OUTDIR):
 	mkdir $(TOY_OUTDIR)
@@ -34,38 +38,41 @@ $(TOY_OBJDIR):
 .PHONY: clean
 clean:
 ifeq ($(shell uname),Linux)
-	rm -r out
 	find . -type f -name '*.o' -delete
 	find . -type f -name '*.a' -delete
+	find . -type f -name '*.out' -delete
 	find . -type f -name '*.exe' -delete
 	find . -type f -name '*.dll' -delete
 	find . -type f -name '*.lib' -delete
 	find . -type f -name '*.so' -delete
 	find . -type f -name '*.dylib' -delete
+	find . -type d -name 'out' -delete
 	find . -type d -name 'obj' -delete
 else ifeq ($(shell uname),NetBSD)
-	rm -r out
 	find . -type f -name '*.o' -delete
 	find . -type f -name '*.a' -delete
+	find . -type f -name '*.out' -delete
 	find . -type f -name '*.exe' -delete
 	find . -type f -name '*.dll' -delete
 	find . -type f -name '*.lib' -delete
 	find . -type f -name '*.so' -delete
 	find . -type f -name '*.dylib' -delete
+	find . -type d -name 'out' -delete
 	find . -type d -name 'obj' -delete
 else ifeq ($(OS),Windows_NT)
 	$(RM) *.o *.a *.exe *.dll *.lib *.so *.dylib
 	$(RM) out
 	$(RM) obj
 else ifeq ($(shell uname),Darwin)
-	rm -r out
 	find . -type f -name '*.o' -delete
 	find . -type f -name '*.a' -delete
+	find . -type f -name '*.out' -delete
 	find . -type f -name '*.exe' -delete
 	find . -type f -name '*.dll' -delete
 	find . -type f -name '*.lib' -delete
 	find . -type f -name '*.so' -delete
 	find . -type f -name '*.dylib' -delete
+	find . -type d -name 'out' -delete
 	find . -type d -name 'obj' -delete
 else
 	@echo "Deletion failed - what platform is this?"