Move away from gutil, use Vinyl & PluginError

[stefandoorn]

Based on https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5, an attempt to move away from gulp-util in this library.

[coveralls]

Coverage decreased (-56.3%) to 43.75% when pulling 6235b49 on stefandoorn:remove-gutil into 86bd6b3 on UltCombo:master.

[coveralls]

Coverage decreased (-56.3%) to 43.75% when pulling 6235b49 on stefandoorn:remove-gutil into 86bd6b3 on UltCombo:master.

[coveralls]

Coverage decreased (-56.3%) to 43.75% when pulling 6235b49 on stefandoorn:remove-gutil into 86bd6b3 on UltCombo:master.

[coveralls]

Coverage decreased (-56.3%) to 43.75% when pulling 6235b49 on stefandoorn:remove-gutil into 86bd6b3 on UltCombo:master.

[coveralls]

Coverage remained the same at 100.0% when pulling f01e246 on stefandoorn:remove-gutil into 86bd6b3 on UltCombo:master.

[stefandoorn]

@UltCombo Could you have a look at this PR?

[Sora2455]

Given that this hasn't been updated since 2016, it looks like @UltCombo has abandoned this plugin.

[stefandoorn]

I'm afraid so, @Sora2455

[elamping]

I have created a forked package with gulp-util removed as it seems this repo is no longer supported:
https://www.npmjs.com/package/@elamping/gulp-buster