v0.6.4

Express v0.6.4

Diff since v0.6.3

Merged pull requests:

• Update docs (#194) (@singularitti)
• Fix docs/src/troubleshooting.md (#195) (@singularitti)
• Update "How to run Express from command line" docs (#196) (@singularitti)
• CompatHelper: bump compat for SimpleWorkflows to 0.13, (keep existing compat) (#198) (@github-actions[bot])