replaced deprecated gulp-util

[zbennett10]

This pr replaces the recently deprecated gulp-util package with corresponding dependencies.

For more info see:

https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
gulpjs/gulp-util#143

Thanks!

[demurgos]

Hi,
I am not sure if the lock file should be included.

Traditionally, I included it in all of my projects (both applications and libraries) to get reproducible builds. After reading more about it and other lock files (Cargo lock files for Rust) I came to the conclusion that they are very valuable for applications but should be avoided for libraries. The main reason is that they hide issues with dependencies to library authors and CI instead of retrieving the latest versions, this means that consumers are always the first affected by updates in transitive dependencies.

[zbennett10]

That makes perfect sense. I made the change. Do you think this should be indicated in the .gitignore?

[demurgos]

I updated the PRs I made recently to remove the lock files and add them to the gitignore files. I just hope that adding them to the gitignore files won't delay the PRs even more so it may be safe to not add it.

Edit: I stopped messing with lock files: the best is to keep the situation as is for PRs we send,