chore: release 2.2.0

[github-actions]

🤖 I have created a release *beep* *boop*

2.2.0 (2021-06-23)

Features

• add 'content' utilities in JIT mode (47c04bd)
• add blur-none by default (Closes #230) (7d317b7)
• add caret-color utilities (5ecbcf3), closes #235
• add exhaustive pseudo-class and pseudo-element variant support (#252) (9cb18e6)
• add per-side border color utilities for JIT mode enabled configs (6ec97b9)
• add support for the new background origin utils (2bc9840), closes #241
• add universal shorthand color opacity syntax (38f27dd)

Bug Fixes

• add missing classnames that does not have the opacity short hand suffix (a48e16b)
• only generate classnames opacity short hand when JIT mode is enabled (75902d9)

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