First parts of PDeque
More work on balancing when popping deque
pop and popleft passes all tests
Remove duplication in pop implementations
Deque append and extend
PDeque count and remove
Minor PList split performance tweaking
PDeque reverse
First implementation of PDeque rotate
PDeque, more flexible popping and clean up rotation
Deque maxlen for append
Deque maxlen in str and extend, fix but in pop
Deque indexing & slicing, maxlen validity
PDeque hashing
PDeque literalish and index