Update package dependencies

[johnmaia]

This PR Updates the following dependencies:

• babel-eslint@10.0.1
• eslint-plugin-mocha@5.3.0
• eslint-plugin-jest@22.4.1
• eslint-plugin-flowtype@3.4.2
• eslint-plugin-new-with-error@2.0.0
• eslint-plugin-react-hooks@1.6.0
• eslint-plugin-sort-class-members@1.4.0
• eslint-plugin-sort-destructure-keys@1.2.0
• eslint@5.16.0
• mocha@6.0.2
• should@13.2.3

With the update to the new version of eslint the rule newline-after-var was removed (given that its deprecated since version 4.0.0) and it was replaced by the padding-line-between-statements rule.

The only breaking change that this PR introduces is that this package now requires node 8.