Implement json.`%` for enums.
Implement json.`%` for enums.

russpowers/Nim,dom96/Nim,dom96/Nim,dom96/Nim,tulayang/Nim,russpowers/Nim,russpowers/Nim,russpowers/Nim,russpowers/Nim,dom96/Nim,dom96/Nim,dom96/Nim,tulayang/Nim,dom96/Nim,tulayang/Nim,russpowers/Nim,tulayang/Nim,tulayang/Nim,russpowers/Nim,tulayang/Nim