logger function in npmlog gets overwritten on npm install

[robertkowalski]

Currently having a look on #28

When I run npm i ./foo to test normalize-package-data which can handle the scripts-property and is logging them, it turns out that the log function from package.json gets changed from addLocalDirectory before npm-log can log the log message.

[lukekarrys]

Cleaning out old/outdated issues in this repo 👋🏼