Updated istanbul to version 0.3.22

[zspecza]

🚀

istanbul just published version 0.3.22, so that’s now up to date in your package.json.

Check that it doesn’t break your code and release the new version of your software safe in the knowledge that it will stay in this working state.

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The new version differs by 3 commits (ahead by 3, behind by 0).

• 2a6d054: 0.3.22
• d445edd: Merge pull request #455 from sterlinghw/master
• eebd2aa: update escodegen to its latest version, reenabling support for super()

See the full diff.

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