Update for Prettier v2.0 and other dependencies

• Fixed tests after updated ava b43ca97
• Update all dependencies 276a623
• Bump chalk from 2.4.2 to 4.1.0 79f8fed
• Bump import-fresh from 3.1.0 to 3.2.1 70cb64a
• Bump np from 5.1.0 to 6.3.0 bed4f4b
• Bump eslint from 6.5.1 to 6.8.0 3017cea
• Bump eslint-config-prettier from 6.4.0 to 6.11.0 6d67260
• Change defaults for prettier 2.0 a619a68
• Bump prettier from 1.18.2 to 2.0.5 25caf57
• Bump eslint-plugin-import from 2.18.2 to 2.22.0 0cff366
• Bump eslint-plugin-prettier from 3.1.1 to 3.1.4 d24fd1a
• Bump ava from 2.4.0 to 3.9.0 8247780
• Bump cross-spawn from 7.0.0 to 7.0.1 f3f5aa6
• Bump eslint-config-prettier from 6.2.0 to 6.4.0 b182a0a
• Bump eslint-plugin-prettier from 3.1.0 to 3.1.1 b3ae9df
• Bump eslint from 6.3.0 to 6.5.1 172477c
• Bump ava from 2.3.0 to 2.4.0 02b62e8
• Bump np from 5.0.3 to 5.1.0 2f5ac56

v0.7.8...v0.8.0