Iteration utilities

Utilities based on Pythons iterators and generators.

The full list of functions and classes included in this package:

accumulate	all_distinct	all_equal	all_isinstance
all_monotone	always_iterable	any_isinstance	applyfunc
argmax	argmin	argsorted	chained
clamp	combinations_from_relations	complement	constant
consume	count_items	deepflatten	dotproduct
double	duplicates	empty	first
flatten	flip	getitem	groupedby
grouper	InfiniteIterable	insert	intersperse
ipartition	is_even	is_iterable	is_None
is_not_None	is_odd	ItemIdxKey	iter_except
Iterable	itersubclasses	last	ManyIterables
merge	minmax	ncycles	nth
nth_combination	one	packed	pad
partial	partition	Placeholder	powerset
radd	random_combination	random_permutation	random_product
rdiv	reciprocal	remove	repeatfunc
replace	replicate	return_called	return_False
return_first_arg	return_identity	return_None	return_True
rfdiv	rmod	rmul	roundrobin
rpow	rsub	second	Seen
sideeffects	split	square	starfilter
successive	tabulate	tail	tee_lookahead
third	unique_everseen	unique_justseen