Bumped minimal supported node version to 10.x

RomiC released this 14 Mar 10:51

· 233 commits to master since this release

Due to node 8.x isn't being maintained anymore, bumped minimal supported version to 10.x
DX-updates:
- Linting+formatting
  - Removed .editorconfig
  - Added prettier and integrated it with eslint
  - Formatted code
- Migrated Travis → Github-actions
- Rewrote tests from ava+sinon to jest

Assets 2