2.0.0

This release bumps remark to version 13, which introduces major under-the-hood changes. See Remark's 13.0.0 release notes for more information.

• updates remark-* packages to remark v13; affected are remark-cli 8.0.0 -> 9.0.0, remark-frontmatter 1.3.3 -> 3.0.0, remark-preset-lint-recommended 4.0.0 -> 5.0.0, remark-validate-links 10.0.0 -> 10.0.2