Running mern init produces a lot of deprecation warnings

Here's a list of packages that are not maintained according to messages:
- babel-preset-es (consider babel-preset-env)
- redux-ava
- postcss-cssnext -> postcss-preset-env
- mockgoose -> mongodb-memory-server
- not-so-shallow
- circular-json -> flatted
- formatio (maintained by someone else?)
- samsam (maintained by someone else?)

Requesting an upgrade via deprecation:
- hoek
- boom
- cryptiles
- browsers list
- formidable