:new: Enforce more validations on linter and messages
:new: Enforce more validations on linter and messages

steelbrain/linter,atom-community/linter,blakeembrey/linter,DanPurdy/linter,shawninder/linter,e-jigsaw/Linter,Arcanemagus/linter,JohnMurga/linter,AtomLinter/Linter