Always reinstall node_modules before publishing new versions (#57).

Prevents stagnant versions from being bundled.

Makefile

@@ -43,11 +43,14 @@ test-concurrent: clean-test
 		& node ./node_modules/.bin/_mocha
 	@make clean-test
 
-release: test
+release:
 ifeq ($(strip $(version)),)
 	@echo "\033[31mERROR:\033[0;39m No version provided."
 	@echo "\033[1;30mmake release version=1.0.0\033[0;39m"
 else
+	rm -rf node_modules
+	npm install
+	make test
 	sed -i.bak 's/"version": "[^"]*"/"version": "$(version)"/' package.json
 	rm *.bak
 	git add .