Multiline Lua output incorrectly quotes keys

[Phrogz]

local n = require('neatjson')

t = {foo=1, bar=2}

print(n(t, {lua=true, wrap=false}))
--> {foo=1,bar=2}

print(n(t, {lua=true, wrap=true}))
--> {
-->   "foo"=1,
-->   "bar"=2
--> }