Fix indent in String#casecmp comments
Implement `NoMethodError#args`.
Add Array#to_h
Merge pull request #2346 from suzukaze/add-string-comment2

Fix indent in String#casecmp comments
Merge pull request #2347 from take-cheeze/nomethod_args

Implement `NoMethodError#args`.
Merge pull request #2348 from takkanm/add_array_to_h

Add Array#to_h