Properly track deprecations

[MelSumner]

Issue

Deprecation items should have a link to the RFC that deprecates the item. This helps with transparency and also confirms that the deprecated item listed has relevant information.

To fix

• Update the deprecated item title to contain the link to the RFC that specified the deprecation

Example

From https://www.emberjs.com/deprecations/v3.x
In the screenshot below, Getting the @each property and Use notifyPropertyChange instead of propertyWillChange and propertyDidChange should each be a link to the RFC that specifies that they should be deprecated.

[MelSumner]

This should be done after ember-learn/ember-website#119

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[mansona]

@MelSumner now that we decided against doing ember-learn/ember-website#119 do you have any objection to me moving this into the deprecations repo? using the "transfer issue" feature I mean :)

[stale]

This issue has been automatically marked stale. If this issue is something that still needs work, please add a comment and it will remain open, otherwise it will close in 7 days. You are welcome to open a new issue if you miss the window. Thanks!