Update twig to version 0.9.1 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

twig just published its new version 0.9.1, 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 twig – 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 203 commits .

• b41eb65 0.9.1
• 81ea020 Fixed changelog version
• 6a2ac25 0.9.0
• f98b0ed Updated changelog
• 8e6074d Add support for slice shorthand (#362)
• c48b841 Additional ignores for git and npm
• 429d7a7 Add packaging scripts for npm (#364)
• c270559 Add browser specific build to webpack (#363)
• 317424e Allow expressions after period accessor (#356)
• f2c6eac Update README.md (#360)
• 36feff7 add waffle.io badge (#358)
• 89bc1df Support extended ternary operator (?:) (#354)
• 5ac00db Fix negative number parsing and // flooring (#353)
• 29ce79e Directly require phpjs functions (#351)
• a71e7e1 Allow keys as expressions (#350)

There are 203 commits in total. See the full diff.

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