Deprecate Ember.Handlebars.SafeString.

[rwjblue]

Suggest using Ember.String.htmlSafe over Ember.Handlebars.SafeString:

// deprecated
new Ember.Handlebars.SafeString(someString);

// Non-deprecated
Ember.String.htmlSafe(someString);

For a few reasons:

• The SafeString API is a tad bit "trolly" (many questions arise from it "not working" due to forgetting to use new).
• The Ember.Handlebars namespace is basically legacy and going away

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The steps needed for this are:

• Change this to use deprecateFunc.
• Add an entry to the 2.x deprecation guide
• Link to that deprecation guide entry in the deprecation added above.

[acorncom]

Looks like this issue can be closed?