Support tags in Appsignal.send_exception
First fork, then add to queue
Alias tag_request to tag_job, for background jobs
Merge pull request #120 from appsignal/tag_job

Alias tag_request to tag_job, for background jobs
Merge pull request #116 from appsignal/tags_in_send_and_add_exception

Support tags in Appsignal.send_exception
Merge pull request #119 from appsignal/fix_fork

First fork, then add to queue
Bump to v0.8.6.beta.1 [ci skip]