Update test_counting_hash.py

Very small change to fix a copy paste comment error.
Update ChangeLog
Update ChangeLog

Fixed Formatting Issue (Two spaces instead of one)
Merge pull request #661 from jgluck/master

Update test_counting_hash.py (Fixing a ctr+v error)
add code of conduct
clarify notification process
wording tweaks courtesy @ctb & @camillescott