BitArray new design

[Era Scarecrow]

  Well some minor update. From the looks of how it is going to be 
set up, it is almost entirely a template. Consider you have 
BitArray!(Fixed!(1024)), vs BitArray!(Dynamic), in order for one 
to copy to the other template functions are needed. Override one 
of them, and now i have to define it to handle all slice and 
BitArrays as template functions too. not horrible, but has it's 
downsides.

  Also as for ranges/slices; Some need their contents const while 
others don't care. So..

//slice is also a range
struct BitArraySlice(BA, bool isConst){}


  Got a lot of work to do, so I wouldn't expect anything for a 
couple weeks.