huge speedup (5x-15x) for `items` and `keys` methods of BytesDAWG and RecordDAWG; `.get` method
huge speedup (5x-15x) for `items` and `keys` methods of BytesDAWG and RecordDAWG; `.get` method

kmike/DAWG,pombredanne/DAWG,moonlet/DAWG,pombredanne/DAWG,pombredanne/DAWG,kmike/DAWG,kmike/DAWG,pytries/DAWG,pytries/DAWG,moonlet/DAWG,pombredanne/DAWG,moonlet/DAWG,pytries/DAWG,kmike/DAWG,kmike/DAWG,moonlet/DAWG,pytries/DAWG