Fix incorrect markup in CHANGELOG.md
Remove empty section in CHANGELOG.md
Merge pull request #599 from tricknotes/doc-markup

Fic doc markup
Meet interface expectation for active record.

Count must still accept a second parameter.
https://github.com/rails/rails/blob/0ef8a244231c355cab7f4d032efed51ef5ddfe99/activerecord/lib/active_record/relation/calculations.rb#L30

I'm not entirely sure why this method is here. I assume its for a
reason.
Fix milestones link
Merge pull request #601 from bmsatierf/master

Fix milestones link [ci skip]
sha_prefix should not be random
Merge pull request #602 from jdelStrother/sha_prefix

sha_prefix should not be random
Merge pull request #600 from freerunningtech/master

Meet interface expectation for active record.