fixed kxArray.cast to cast objects into an Array and cast null and undefined to an empty Array
fixed kxArray.contains, now comparing objects (and their contents) too
added test for kxArray
removed the "same" function and fixed the tests, kx.array.contains now won't be able to find an Object
Merge pull request #5 from daanvanham/develop

kxArray fixes and test
Merge branch 'develop'

* develop:
  removed the "same" function and fixed the tests, kx.array.contains now won't be able to find an Object
  added test for kxArray
  fixed kxArray.contains, now comparing objects (and their contents) too
  fixed kxArray.cast to cast objects into an Array and cast null and undefined to an empty Array