Commits on Mar 17, 2020

  1. Bump acorn from 6.4.0 to 6.4.1 

    Bumps [acorn](https://github.com/acornjs/acorn) from 6.4.0 to 6.4.1.
- [Release notes](https://github.com/acornjs/acorn/releases)
- [Commits](acornjs/acorn@6.4.0...6.4.1)

Signed-off-by: dependabot[bot] <support@github.com>
    @dependabot
    dependabot[bot] committed Mar 17, 2020
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