v1.0.3 fix races & default kind handling, copy error when clearing stack

What's Changed

• Fix race accessing 'populateStackTrace' by @elv-gilles in #5
• copy error when clearing stack, fix default kind handling by @lukseven in #6

New Contributors

• @elv-gilles made their first contribution in #5

Full Changelog: v1.0.2...v1.0.3