add_function can support both async and sync; add await enforce.enfor…

[Chimou0]

add_function can support both async and sync; add await enforce.enforce() #342

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
18 out of 19 committers have signed the CLA.

✅ BustDot
✅ amisadmin
✅ nschwane
✅ premac
✅ Chimou0
✅ felixlu
✅ tanasecucliciu
✅ nomeguy
✅ mbierma
✅ hsluoyz
✅ abichinger
✅ LeTeddy
✅ barret-yzh
✅ HashCookie
✅ leeqvip
✅ huonw
✅ KoNEW
✅ truc0
❌ semantic-release-bot
_{You have signed the CLA already but the status is still pending? Let us recheck it.}