fix: Update Ember version and use new Embroider testing setup

[knownasilya]

No description provided.

[knownasilya]

Current issue when running npm start:

Class extends value undefined is not a constructor or null


Stack Trace and Error Report: /var/folders/g5/dvq_p0010s5b2ys8bwd7czdr0000gp/T/error.dump.19f81a4f30f4060237c5ca0b4c83609d.log
An error occurred in the constructor for ember-qunit at /Users/iradchenko/maintained/ember-page-title/node_modules/ember-qunit

Stack trace and details:

stack trace

ERROR Summary:

broccoliBuilderErrorStack: [undefined]
code: [undefined]
codeFrame: [undefined]
errorMessage: Class extends value undefined is not a constructor or null
errorType: [undefined]
location:

column: [undefined]
file: [undefined]
line: [undefined]


message: Class extends value undefined is not a constructor or null
name: TypeError
nodeAnnotation: [undefined]
nodeName: [undefined]
originalErrorMessage: [undefined]
stack: TypeError: Class extends value undefined is not a constructor or null

at Object. (/Users/iradchenko/maintained/ember-page-title/node_modules/webpack/lib/MainTemplate.js:56:45)

at Module._compile (internal/modules/cjs/loader.js:999:30)

at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)

at Module.load (internal/modules/cjs/loader.js:863:32)

at Function.Module._load (internal/modules/cjs/loader.js:708:14)

at Module.require (internal/modules/cjs/loader.js:887:19)

at require (internal/modules/cjs/helpers.js:74:18)

at Object. (/Users/iradchenko/maintained/ember-page-title/node_modules/webpack/lib/Compilation.js:24:22)

at Module._compile (internal/modules/cjs/loader.js:999:30)

at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)

[raido]

Any updates here? If you are occupied, I can try to update this branch to Ember v3.28 and hopefully get it ready for merge.

[knownasilya]

Yes please @raido

[raido]

I began working on this and bumping it to Ember 3.28.x.

[raido]

Getting back on track plan:

Tier 1:

1. We merge this, get builds greenish as beta scenario is allowed to fail
2. Cherry pick or ask author to only do assign related changes in this PR - Resolve deprecation re: use Object.assign or spread instead of Ember.… #218
3. Release a major version v7.x, because this PR drops Node 10

Tier 2:

1. I'll open PR for Embroider ember-auto-import 2.x upgrade
2. Release another major version
3. Get ember-page-title updated to v8.x for cli blueprints.

cc @knownasilya

[raido]

I lifted my comment into tracking issue - #222