lib/jekyll/errors.rb in jekyll-3.1.0.pre.beta1 vs lib/jekyll/errors.rb in jekyll-3.1.0.pre.rc1

@@ -1,8 +1,10 @@
 module Jekyll
   module Errors
     FatalException = Class.new(::RuntimeError)
 
-    MissingDependencyException = Class.new(FatalException)
-    DropMutationException      = Class.new(FatalException)
+    DropMutationException       = Class.new(FatalException)
+    InvalidPermalinkError       = Class.new(FatalException)
+    InvalidYAMLFrontMatterError = Class.new(FatalException)
+    MissingDependencyException  = Class.new(FatalException)
   end
 end