Update gulp-uglify requirement from ^0.2.1 to ^3.0.2

[dependabot-preview]

Updates the requirements on gulp-uglify to permit the latest version.

Release notes

Sourced from gulp-uglify's releases.

v3.0.2

A relatively small maintenance release adjusting dependencies.

Features

• Lodash is removed in favor of lighter dependencies specifically for the features used. intelli-espower-loader was also removed, as it's no longer compatible with the full suite of Node.js releases tested.

Changelog

Sourced from gulp-uglify's changelog.

As of version 2.0.0, the CHANGELOG is maintained on GitHub Releases.

Change Log

1.5.4 (2016-06-22)

1.5.3

• Updated UglifyJS to 2.6.2

1.5.2

• Updated UglfiyJS to 2.6.1

1.5.0

• Update UglifyJS to 2.6.0.
• CI and dependencies chores.
• Attempt to resolve issue #109 where "ghost" files would appear in generated sourcemaps.

1.4.2

• Updated UglifyJS to 2.5.0.
• CI and dependencies chores.

1.4.1

• Detect if options is a non-Object and log a warning.

  Older versions of Node.js did not allow Strings to be passed to Object.keys leading to errors and confusion to users following certain tutorials.

1.4.0

• Deprecated the preserveComments option of "some".
• Added the preserveComments option of "license" that uses uglify-save-license.

1.3.0

• Updated UglifyJS to 2.4.24.
• Streams3 support via through2 dependency update.

1.2.0

• Update dependencies, including UglifyJS to 2.4.19.

1.1.0

• Fix sources path in source maps (thanks @​floridoo)
• Update UglifyJS to 2.4.16 (thanks @​tschaub)

... (truncated)

Commits

• 7b9a7ad 3.0.2
• a56d1c7 feat: remove lodash dependency
• bcdda44 docs: replace pump with pipeline
• c92197d 3.0.1
• 27b26d4 fix(composer): invoke callback only once
• 2c7f656 tests: import tape-catch to catch thrown errors
• b2492c4 fix: create safe-buffers
• a751c5a tests: convert tests to to tape harness
• 95f17a5 feat(error): add column to error string
• e2462fa chore(travis): update test matrix
• Additional commits viewable in compare view

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