Bump `v5.1.0`

Ignore `nyc_output/` folder in git

[dist] Release v4.1.0

[dist] Bump to v4.0.0

[dist] Bump v3.1.0

[dist] Bump v3.0.1

[dist] Bump to v3.0.0

[dist] Bump to v2.1.5

[dist] Bump to v2.1.4

[dist] Bump v2.1.3