ProGuard config
ProGuard config

Fixes https://github.com/Kotlin/kotlinx.coroutines/issues/103,
suggested by ProGuard team here: https://sourceforge.net/p/proguard/bugs/660/
Kotlin/kotlinx.coroutines,Kotlin/kotlinx.coroutines,Kotlin/kotlinx.coroutines,Kotlin/kotlinx.coroutines,Kotlin/kotlinx.coroutines