Declarations of classes and functions should be separated with blank line

[paul-dingemans]

Declarations, except consecutive declarations of properties, should be separated by a blank line.

const val foo1 = "foo1"
class FooBar {
    val foo2 = "foo2"
    val foo3 = "foo3"
    fun bar1() {
    }
    fun bar2() = "bar"
    val foo3 = "foo3"
    val foo4 = "foo4"
    enum Foo {}
}

should be formatted as:

const val foo1 = "foo1"

class FooBar {
    val foo2 = "foo2"
    val foo3 = "foo3"

    fun bar1() {
    }

    fun bar2() = "bar"

    val foo3 = "foo3"
    val foo4 = "foo4"

    enum Foo {}