conversion of lazy properties

[petermichaux]

This Swift

private lazy var name: String = {() -> String in
    return "abc"
}()

is translated to the following Kotlin

private lazy var name: String = {   -> 
    return "abc"
}()

I think it should result in the following Kotlin.

private val name: String by lazy {
    "abc"
}

The var, val issue is tricky. The return issue is tricky.

[angelolloqui]

Partially fixed with 972daf0. However, the return statement is a different issue, related to how lambdas are translated (see #69)