master
Added tests for `array_combinations_with_replacement`
added basic integration tests for .flatten_ok() without size_hint tests
Macro hygiene of `chain!`
Allow to use EitherOrBoth<T> to mean the same as EitherOrBoth<T, T>
Implement `PeekingNext` for `PeekingTakeWhile`.
Specialize ExactlyOneError::count
Fix clippy warning: Allow calling `last` on `DoubleEndedIterator`s in tests
Fix warning: Avoid unnecessary parentheses around closure body
Migration to 2018 edition.
feat: make izip! temporary friendly