Rename severity to sev, remove "fatal" sev
Update version
Update changelog & make spacing/capitalization consistent
Another spacing fix for the CHANGELOG.md
Rename "sev" to "severity"
Rewrite deleted test to use "error" instead of "fatal" severity
Add payload_version to payload
Default bugsnag.notify severity to "warning"
Merge pull request #96 from bugsnag/add-sev

Severity