Prepare 1.3.0 release
Prepare 1.3.0 release

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