so today, on a tip from
@karelpeeters, I got horny and excited by inline classes (hoping they will be my panacea to some of my issues with kt). Sneaking around they implemented them experimentally since 1.2.30 (and they never told us!!! 😱). You can implement them passing a compiler option,
https://github.com/Kotlin/KEEP/issues/104#issuecomment-405852817.