Release 0.3.8

Features

• HTTP-API: Configure replica set with environment variables or yaml file
• add __pinned attribute to the Metadata DTO

Bugs

• Upgrade jackson - Security issue (moderate) - CVE-2019-12814
• JSON-ignore cached content
• Fix IPFS-Cluster pinning
• Fix issue with SSL endpoint (cf: Infura)

Misc

• Review README
• docker-compose samples here, here and here,