start of bplist writer, can write integers and arrays (of integers) + cleanup in bytestream
reset for IntArray -> reset count to zero
nested arrays work as expected (only array + integer payloads for now)
now writing ASCII strings (inefficiently)
simple dictionary support bplist writer
bplist writer uses tagged integer as size for collections > 14 elements, faster writing
faster non-bulk add
writing floats, various smaller optimizations