Update gulp-sourcemaps to the latest version 🚀

[greenkeeper]

Version 2.5.0 of gulp-sourcemaps just got published.

Dependency	gulp-sourcemaps
Current Version	2.4.1
Type	devDependency

The version 2.5.0 is not covered by your current version range.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of gulp-sourcemaps.
Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.

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Your Greenkeeper Bot 🌴

[greenkeeper]

Version 2.5.1 just got published.

Update to this version instead 🚀

[greenkeeper]

Version 2.5.2 just got published.

Update to this version instead 🚀

Commits

The new version differs by 3 commits .

• 8039c13 2.5.2
• ee64234 Update organization references (closes #289)
• 9857f3f Logging Improvements (#301)

See the full diff.

[greenkeeper]

Version 2.6.0 just got published.

Update to this version instead 🚀

Commits

The new version differs by 2 commits .

• 65d099a 2.6.0
• 44801fa Deprecate options.identityMap and export identityMap stream (#303)

See the full diff.

[greenkeeper]

Version 2.6.1 just got published.

Update to this version instead 🚀

Commits

The new version differs by 4 commits.

• 4b723f0 bump 2.6.1
• 92c489c Merge pull request #323 from gulp-sourcemaps/nmccready/loggingMemleak
• da4cdb2 fix npm
• a21f037 fix: issue 317 memory leak on logging

See the full diff