Merge pull request RichardKnop#401 from jackielii/feature/inject-sig-ctx

inject signature into the context

Merge pull request RichardKnop#402 from BillZong/patch-1

fix: "true" spell wrong

Merge pull request RichardKnop#397 from RichardKnop/update-deps

Updated dependencies.

Merge pull request RichardKnop#394 from TheFoundryVisionmongers/mongodb1

Upgrade to mongodb v1.0.0

Merge pull request RichardKnop#391 from TheFoundryVisionmongers/mongo…

…dbrc

Update mongo db driver version to 1.0.0rc2

Merge pull request RichardKnop#385 from FranOis/pass_context_around

Add context to Publish method for tracing purposes.

Fixing mongodb bug in CI.

Merge pull request RichardKnop#372 from bharat-p/pr-fix-367-sqs-custo…

…m-queue

367 Fix NewCustomQueueWorker() functionality with sqs broker

Merge pull request RichardKnop#366 from bharat-p/fix-sqs-fifo-queues-365

Do not use Machinery's GroupUUID to set SQS MessageGroupID attribute.

Merge pull request RichardKnop#351 from eldad87/pre_publish_handler

Server - Pre publish handler