- [13520](https://github.com/emberjs/ember.js/pull/13520) [BUGFIX] Fixes issues with `baseURL` and `rootURL` in `Ember.HistoryLocation` and ensures that `Ember.NoneLocation` properly handles `rootURL`.
- [13590](https://github.com/emberjs/ember.js/pull/13590) [BUGFIX] Avoid `_lazyInjections` in production builds.
- [13442](https://github.com/emberjs/ember.js/pull/13442) [BUGFIX] Revert `Ember.Handlebars.SafeString` deprecation.
- [13449](https://github.com/emberjs/ember.js/pull/13449) [BUGFIX] Ensure that `Ember.get(null, 'foo')` returns `undefined`.
- [13465](https://github.com/emberjs/ember.js/pull/13465) [BUGFIX] Propagate loc information for inline link-to transform.
- [13461](https://github.com/emberjs/ember.js/pull/13461) [BUGFIX] Prevent `Ember.get` from attempting to retrieve properties on primitive objects.
- [13418](https://github.com/emberjs/ember.js/pull/13418) [BUGFIX] Ensure that passing `run.later` a timeout value of `NaN` does not break all future
timers.
- [13435](https://github.com/emberjs/ember.js/pull/13435) [BUGFIX] Fix positional parameters when used with component helper.
- [13438](https://github.com/emberjs/ember.js/pull/13438) [BUGFIX] Ensure custom components extending from `Ember.LinkComponent` can operate
in both block and inline form.
- [13356](https://github.com/emberjs/ember.js/pull/13356) [BUGFIX] Update `Registryhas` to always return true/false.
- [13359](https://github.com/emberjs/ember.js/pull/13359) [BUGFIX] Fix `{{if}}` and `{{unless}}` subexpression sometimes not updating.
- [13344](https://github.com/emberjs/ember.js/pull/13344) [BUGFIX] Revert `Ember.merge` deprecation.
- [13335](https://github.com/emberjs/ember.js/pull/13335) [BUGFIX] Ensure injected property assertion checks `container`. Fixes issues
with usage of objects created by older addons that are attempting to use `Ember.inject.service()`.
- [13333](https://github.com/emberjs/ember.js/pull/13333) [BUGFIX] Prevent the `toString` property from being added to the objects own
properties. Fixes scenarios where the list of own properties changed in debug builds.
- [13327](https://github.com/emberjs/ember.js/pull/13327) [CLEANUP] Remove deprecate-test-as-function deprecation.
- [13326](https://github.com/emberjs/ember.js/pull/13326) [CLEANUP] Remove `View.prototype.currentState` deprecation.
- [13315](https://github.com/emberjs/ember.js/pull/13315) [CLEANUP] Remove legacy view related exports.
- [13310](https://github.com/emberjs/ember.js/pull/13310) [BUGFIX] Fix `mouseenter` typo in ember-testing helpers.
- [13314](https://github.com/emberjs/ember.js/pull/13314) [CLEANUP] Remove Metamorph view and mixin.
- [13144](https://github.com/emberjs/ember.js/pull/13144) / [13195](https://github.com/emberjs/ember.js/pull/13195) / [13193](https://github.com/emberjs/ember.js/pull/13193) [CLEANUP] Remove support for `ember-legacy-views` addon.
- [13192](https://github.com/emberjs/ember.js/pull/13192) [CLEANUP] Remove support for `ember-legacy-controllers` addon.
- [13295](https://github.com/emberjs/ember.js/pull/13295) [CLEANUP] Disable `render` helper in block form.
- [13204](https://github.com/emberjs/ember.js/pull/13204) [DEPRECATE] Deprecate Ember.Handlebars.SafeString in favor of Ember.String.htmlSafe
- [13207](https://github.com/emberjs/ember.js/pull/13207) [DEPRECATE] Depreacte `didInitAttrs` in components
- [13268](https://github.com/emberjs/ember.js/pull/13268) [DEPRECATE] Deprecate usage of `{{render}}` helper with a model param
- [13285](https://github.com/emberjs/ember.js/pull/13285) [BUGFIX] Make `EnumerablefirstObject` read only.
- [13289](https://github.com/emberjs/ember.js/pull/13289) [BUGFIX] Make `EnumerablelastObject` read only.