[1.4.1] Pause in chain, parallel & preCallback

What's Changed

• Update design-document.md by @ledicm in #1
• [v1.0.0] Data Processing Chain Protocol Library by @Visions-Nicolas in #3
• [v1.3.0] - Pause & Parrallel functionalities by @FelixBole in #6
• [1.4.1] Pause in chain, parallel & preCallback by @Visions-Nicolas in #7

New Contributors

• @ledicm made their first contribution in #1
• @Visions-Nicolas made their first contribution in #3
• @FelixBole made their first contribution in #6

Full Changelog: https://github.com/Prometheus-X-association/data-processing-chain-protocol/commits/1.4.1