chore: release 1.4.0

[github-actions[bot]]

:robot: I have created a release *beep* *boop*

1.4.0 (2021-07-14)

Features

• add support for svgs with "ex", "ch", "cm", "mm", "q", "in", "pc", "pt" (4d2c18e)
• add support for svgs with fill color in path style attribute (1aeb079)

• support svgs without a set viewBox attribute (17b876c)

This PR was generated with Release Please. See documentation.

[github-actions[bot]]

:robot: Release is at https://github.com/oslllo/svg-fixer/releases/tag/v1.4.0 :sunflower: