v3.7.0

• Configuration class for various settings
• Identity interface and implementation
• Using Nyholm PSR HTTP
• Runner class wraps stream-select handler
• StreamFactory as constructor option Client/Server
• Preparations for v4

What's Changed

• Nyholm HTTP messages, intermediate by @sirn-se in #145
• Identity (unique resource identifiers, required for v4) by @sirn-se in #146
• Configuration, logging, documentation by @sirn-se in #147
• Runner by @sirn-se in #148
• Copyright by @sirn-se in #149
• 3.7 final by @sirn-se in #150

Full Changelog: 3.6.2...3.7.0