Tornado 6 support

Merge pull request #31 from gmr/tornado6

Change pinning of Tornado to include Tornado 6

Additional HTTP Server Config Options

Allow max_body_size and max_buffer_size config parameters to be set on the underlying Tornado HTTPServer so that files larger than the 100MB default can be uploaded in one shot.

Add sprockets.http.app.Application

Also deprecates the runner_callbacks application attribute.

Production Logging Improvements

1.3.2

Include environment and service in the structured log data

Structured data non-Debug output

Change the non-DEBUG log format to include structured data and a leading first byte for log level.

Our applications are run as Docker with syslog logging. We parse the first byte in rsyslog to override the priority (facility * 8) + int value of level.

No More JSON Logging

Merge pull request #16 from sprockets/no-json-logging

Update the logging to remove JSON logging

Fix before_run for multi-process servers

Merge pull request #11 from sprockets/fix-multiproc

Delay grabbing the IOLoop until after fork.

Add a "before run" callback

Merge pull request #10 from sprockets/release-1-1-0

Release 1 1 0

Admit that other sprockets exist!

This release adds a synergistic tie to sprockets/sprockets.mixins.media_type.

Finally a non-beta release

Check out the new error handling stuff in sprockets.http.mixins.