Remove trimming from tracing

[ewd3v]

Original code said there was no way to specify a trace level without also specifying a message, but you can just set the message to nil to achieve this.

This change makes it so we don't have to trim the traceback to remove the newline.

Checklist before submitting:

• [x] Added entry to CHANGELOG.md
• [ ] Added/updated relevant tests
• [ ] Added/updated documentation