Port current implementation of working with bits to BitSet

[Alex Petrov]

For example:

(java.util.BitSet/valueOf
 (.putInt
  (java.nio.ByteBuffer/allocateDirect 4) 0 (int 1)))

Leaving it here not to forget.

[Alex Petrov]

checked. Makes no sense.

[Michael Klishin]

@ifesdjeen why?

[Alex Petrov]

Clojure's internal bit operations are quite good. Only difference I currently see is that BitSet allows working with >64 bits at once (or whatever the limit that may be imposed by working with raw numbers directly).

[Alex Petrov]

Yup, just checked it: in Clojure you can represent up to 64 bits using bit operations...