* Add benchmarks for error handler
* All multiple global ErrorHandler sets
* Use ioutil instead of io for Discard
* Add changes to changelog
* Add unit tests for delegation
* Resolve flaky global ErrorHandler delegation test
Remove multi-goroutine approach and just test what needs to be tested.
* Assert instead of require where appropriate
* Move global code to toplevel package
* Move version function to toplevel package
* Update changelog
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
