Add *_to_slashes methods to compat.

Library/Homebrew/cask/cmd/edit.rb

@@ -17,7 +17,7 @@ module Cask
 
       def cask_path
         casks.first.sourcefile_path
-      rescue CaskInvalidError, CaskUnreadableError
+      rescue CaskInvalidError, CaskUnreadableError, MethodDeprecatedError
         path = CaskLoader.path(args.first)
         return path if path.file?
 

Library/Homebrew/compat.rb

@@ -0,0 +1 @@
+require "compat/cask/dsl/version"

Library/Homebrew/compat/cask/dsl/version.rb

@@ -0,0 +1,24 @@
+module Cask
+  class DSL
+    class Version < ::String
+      module Compat
+        def dots_to_slashes
+          odeprecated "#dots_to_slashes"
+          version { tr(".", "/") }
+        end
+
+        def hyphens_to_slashes
+          odeprecated "#hyphens_to_slashes"
+          version { tr("-", "/") }
+        end
+
+        def underscores_to_slashes
+          odeprecated "#underscores_to_slashes"
+          version { tr("_", "/") }
+        end
+      end
+
+      prepend Compat
+    end
+  end
+end