Updated Self Hosting (markdown)
Updated Upgrading (markdown)
v6 migration guide
Updated Integrations (markdown)
Updated _Footer (markdown)
Updated Reference Ids (markdown)
Updated Getting Started (markdown)
Updated Self Hosting Docker (markdown)
Updated Project Settings (markdown)
Updated API Usage (markdown)
Added Test Environment Instructions
Created Self Hosting - Docker (markdown)
Created _Footer (markdown)
Minor fixes