Use comment before task as description

[Lispython]

Describe the issue:

• Bug
• Change request
• New feature request
• Discussion request

Issue long description:

Key "desc" is used to define task description and it's wordy. YAML allow comments and we can use comment before task definition as description for task. Unfortunately current YAML parser doesn't allow to extract comment from document.

Operating system:

Devrc version:

Steps to reproduce:

Current behavior:

Expected behavior:

Additional information:

Mentions: