Replace Tape with Jest as test framework

[macrigiuseppe]

Currently we are using Tape as test framework.

By migrating to Jest we can perform the following:

• Snapshot friendly
• Increase test speed using concurrency
• Bigger community and documentation

[macrigiuseppe]

Codemods to migrate: https://github.com/skovhus/jest-codemods

[macrigiuseppe]

Migrate to Jest ETA: ~3 days
Snapshot creation ETA: ~4 days

Need to look into Travis CI more snapshot integration

No dependencies

[chrisirhc]

For consideration, baseweb is leveraging https://screener.io . @gergelyke also mentioned https://percy.io/