Update gulp-bump to version 2.0.1 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

gulp-bump just published its new version 2.0.1, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of gulp-bump – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging :palm_tree:

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The new version differs by 6 commits .

• eb62057 2.0.1
• fd9d14f update travis + remove unused example
• d107a05 2.0.0
• 079ccbb refactor - switch to regex parsing
• f2ac137 Merge pull request #44 from crea1/patch-1
• 2027e9f Update example with missing require of semver

See the full diff.

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