Js.ember

- [13634](https://github.com/emberjs/ember.js/pull/13634) [BUGFIX] Fix issues with rerendering blockless and tagless components.
- [13655](https://github.com/emberjs/ember.js/pull/13655) [BUGFIX] Make debugging `this._super` much easier (remove manual `.call` / `.apply` optimizations).
- [13672](https://github.com/emberjs/ember.js/pull/13672) [BUGFIX] Fix issue with `this.render` and `this.disconnectOutlet` in routes.

- [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.

- [13310](https://github.com/emberjs/ember.js/pull/13310) [BUGFIX] Fix `mouseenter` typo in ember-testing helpers.
- [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.
- [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()`.
- [13344](https://github.com/emberjs/ember.js/pull/13344) [BUGFIX] Revert `Ember.merge` deprecation.

- [13239](https://github.com/emberjs/ember.js/pull/13239) [BUGFIX] Prevent warnings for unknown feature flags
- [13287](https://github.com/emberjs/ember.js/pull/13287) [BUGFIX] Fix a recent regression with `Ember.A(null)`
- [13290](https://github.com/emberjs/ember.js/pull/13290) [BUGFIX] `isStream` is no longer a reserved property name in Components
- [13294](https://github.com/emberjs/ember.js/pull/13294) [DEPRECATE] Deprecate usage of `{{render}}` with a block
- [13031](https://github.com/emberjs/ember.js/pull/13031) [BUGFIX] Fix mergedProperties at create time modifying proto
- [13049](https://github.com/emberjs/ember.js/pull/13049) [BUGFIX] Fixes `{{with proxy as |foo|}}`
- [12829](https://github.com/emberjs/ember.js/pull/12829) [BUGFIX] Support tagless components in fastboot
- [12575](https://github.com/emberjs/ember.js/pull/12575) [FEATURE] Make acceptance helpers fire native events instead of jQuery ones.
- [12929](https://github.com/emberjs/ember.js/pull/12929) [BUGFIX] Fix bug causing an initial capital to be interpreted as a global.
- [12928](https://github.com/emberjs/ember.js/pull/12928) [FEATURE ember-htmlbars-component-generation] Remove feature.
- [13024](https://github.com/emberjs/ember.js/pull/13024) [BUGFIX] Change internal async acceptance test helpers to be somewhat more efficient in determining router transition status.
- [FEATURE] Add helper method named `Ember.assign` to roughly emulate `Object.assign`.

- [13239](https://github.com/emberjs/ember.js/pull/13239) [BUGFIX] Prevent warnings for unknown feature flags.
- [13294](https://github.com/emberjs/ember.js/pull/13294) [DEPRECATE] Deprecate usage of `{{render}}` with a block.

- [13177](https://github.com/emberjs/ember.js/pull/13177) [BUGFIX] Allow contextual component attributes are mutable (allowing for two way binding).
- [13185](https://github.com/emberjs/ember.js/pull/13185) [BUGFIX] Ensure `{{render}}` sets up target properly (fixes issues with `{{render}}`'ed templates using actions).
- [13202](https://github.com/emberjs/ember.js/pull/13202) [BUGFIX] Merge in active transition QPs when doing a transition.
- [13218](https://github.com/emberjs/ember.js/pull/13218) [BUGFIX] Do not refresh routes on initial transition.
- [13228](https://github.com/emberjs/ember.js/pull/13228) [BUGFIX] re-enable link-to when disabledWhen changes values.