v0.9.1

This patch release fixes the recent acorn and minimist vulnerabilities, and updates some dependencies.

• Update ESLint. fc9a806
• Bump query-string from 6.11.0 to 6.11.1 2af6427
• Bump email-comb from 3.9.3 to 3.9.4 1fdeb11
• Bump string-strip-html from 4.3.16 to 4.3.17 5356a1b
• Bump nunjucks from 3.2.0 to 3.2.1 0324913
• [Security] Bump acorn from 7.1.0 to 7.1.1 2fbb4bf

v0.9.0...v0.9.1