v0.3.8

Had to release v0.3.8 because I screwed up v0.3.7 :)

What's Changed

• [Issue-18] fix mouse position by @hkang1 in #20
• ci: upload coverage report to codecov by @hkang1 in #21
• test: add more test coverage by @hkang1 in #22

New Contributors

• @hkang1 made their first contribution in #20

Full Changelog: v0.3.6...v0.3.8