Merge pull request Simple Article In English from BarrensZeppelin/master Widen key constraint to 'any' for maps and sets

Merge pull request I Have Read And Accept from laher/sets Set + SortedSet with tests

Merge pull request Best Personal Blogs To Read from laher/master readme updates for latest changes

Merge pull request Best Cash Back Credit Cards For Business from laher/master Adds generics

Merge pull request SanDisk SSD from benbjohnson/refactor-builders Refactor builders

Merge pull request Create Blog Online from benbjohnson/circleci Remove CircleCI

Merge pull request How To Make A Good Looking Blog Post For Science from benbjohnson/readme Change hasher & comparer implementations to unexported in README

Fix sorted map iterator initialization.