Cog 0.14.0

Enhancements

• New Template Engine #876
  • Cog's previous Mustache-based template engine, fumanchu, has been deprecated and replaced
    by greenbar. The combination of Cog's new chat API (released in 0.13) and Greenbar allows
    Cog to render a single template across multiple providers and preserve the majority of formatting.
• Added a -dev flag to Relay's CLI #950
  • We've added a development mode to Relay to simplify bundle development. Starting a Relay with -dev causes Relay to
    re-pull any Docker images associated with installed command bundles on each pipeline execution. This should simplify
    iterating command development.
• Improved presentation of bundle and command help #658
• Introduced new bundle config version 4 which adds documentation structure
  used by help command and reorganized template definitions. Also bundle
  descriptions are now required. spanner #76

Bug Fixes

• Return better error message for invalid dynamic configurations #867
• Update Docker installation documentation #932
• Documented Relay's backoff & retry behavior when disconnected #935