Emmett 2.0 Archimedes

Changes since 1.3:

• Dropped Python 2 support, requiring Python 3.7 minimum version
• Changed package name to emmett
• Moved from WSGI to ASGI
• Moved to async syntax
• Moved globals module to ctx
• Added output optional param to route definition
• Introduced develop and serve commands in place of run
• Pipeline open and close flows are now handled concurrently
• Rewritten router, optimized request flow
• Introduced websockets support
• Added after_loop signal
• Decoupled templating engine
• Added Request.files
• Added request_max_content_length to App.config
• Added request_body_timeout to App.config
• Added async support in cache module
• Decoupled internationalization engine
• Added runtime migration utils in ORM
• Added response_timeout to App.config
• Use default text/plain Content-Type header in responses
• Added namespace to Injector class
• Added Python 3.8 support