feat: Additional mutations around ordering

[AndrewSwerlick]

Suggestion:

Mutant should include mutations that replace methods like find/detect/min/max/min_by/max_by/last with first and last

Justification

The methods min/max/min_by/max_by all accept a block. However if there is only 1 item in the collection, the block will not executed, and potentially remain untested. It's an easy fact to overlook in your tests. In those situations a mutation to first will result in a live mutation, making the missing coverage obvious.

Additionally mutating to last will detect when your sort conditions aren't being properly exercised because all the records sort in the same order.

find/detect are some what different, since the blocks for those methods will always execute, but it will still help to ensure that your test setup creates collections that both include and exclude the values you're working with.