In #colony #colang, bytes type is really not required as primitive type. str type should exist since it is unicode and mostly used by developers. However, bytes can be represented as Array<u8>.
Since #colony #colang is GC'ed using Reference Counting, refcount, or RC, we can introduce special kind of references called "immortal references" and an example is `bytes: type = Array<u8>`. This should be implementation detail and not exposed to developers.
Immortal objects are GC'ed. So, incref or decref is almost fast as NOP. It will need to check flag on object and determine if object is immortal. Immortal means it stays forever alive while programming is being executed.
Immortal objects without RC field are primitive types such as bool, ints, floats, and short-sized strings (less than 120bits).
All builtin types objects should be immortal. Ref counting them makes no sense. Imagine constantly recreating `bytes: type = Array<u8>` every time we encode str to bytes.
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