[Release] v1.4.0

[github-actions]

Build info

• Browser build (UMD) (./dist/axios.min.js) 31.8 kB (11.9 kB gzipped)
  • v1.3.6 - 31.7 kB
  • v1.3.5 - 31.7 kB
  • v1.3.4 - 31.6 kB
  • v1.3.3 - 31.6 kB
  • v1.3.2 - 31.5 kB
• Browser build (ESM) (./dist/esm/axios.min.js) 29.1 kB (11.3 kB gzipped)
  • v1.3.6 - 29 kB
  • v1.3.5 - 29 kB
  • v1.3.4 - 28.9 kB
  • v1.3.3 - 28.9 kB
  • v1.3.2 - 28.9 kB

Release notes:

Bug Fixes

• formdata: add multipart/form-data content type for FormData payload on custom client environments; (#5678) (bbb61e7)
• package: export package internals with unsafe path prefix; (#5677) (df38c94)

Features

• dns: added support for a custom lookup function; (#5339) (2701911)
• types: export AxiosHeaderValue type. (#5525) (726f1c8)

Performance Improvements

• merge-config: optimize mergeConfig performance by avoiding duplicate key visits; (#5679) (e6f7053)

Contributors to this release

• Dmitriy Mozgovoy
• Arthur Fiorette
• PIYUSH NEGI