attach

Attaches image to every request that asks these questions, and returns it, so a picture can be declared and attached at once: private val thumb = attach(JevImage.of(thumbBytes)). Reading a file here, with JevImage.read, does I/O in the object's initializer, and a missing file makes the object unusable: on the JVM its first use throws ExceptionInInitializerError, and every later use NoClassDefFoundError.