0.7.1

This is a bugfix release that resolves an issue with the JavaScript runtime being unavailable when installed via NPM.

Closed issues:

• 0.7.0 unavailable on NPM (#79)
• Automatic performance testing (#67)

Merged pull requests:

• Fix runtime files location in package.json (#81) via @MaxDesiatov
• Run 4 perf tests instead of 2 (#80) via @j-f1
• Specify correct SwiftWasm snapshot in README.md (#78) via @MaxDesiatov