Remove global and use @dojo/shim/global

[kitsonk]

Type: bug

The following has been addressed in the PR:

• There is a related issue
• All code matches the style guide
• Unit or Functional tests are included in the PR

Description:

Removes global from core and uses @dojo/shim/global instead.

Resolves #302

[kitsonk]

Requires dojo/shim#80 to land first.

[kitsonk]

Let's re-export @dojo/shim/global for now to cause the least amount of downstream breakage.

[codecov-io]

Codecov Report

Merging #303 into master will decrease coverage by -86.9%.
The diff coverage is 0%.

@@            Coverage Diff            @@
##           master    #303      +/-   ##
=========================================
- Coverage   93.86%   6.96%   -86.9%     
=========================================
  Files          38      37       -1     
  Lines        2135    2124      -11     
  Branches      405     402       -3     
=========================================
- Hits         2004     148    -1856     
- Misses         52    1976    +1924     
+ Partials       79       0      -79

Impacted Files	Coverage Δ
src/main.ts	0% <ø> (-100%)	❌
src/request/providers/xhr.ts	3.54% <0%> (-82.27%)	❌
src/has.ts	0% <0%> (-100%)	❌
src/queue.ts	0% <0%> (-100%)	❌
src/MultiMap.ts	1.07% <0%> (-98.93%)	❌
src/DateObject.ts	1.39% <0%> (-98.61%)	❌
src/IdentityRegistry.ts	3.17% <0%> (-96.83%)	❌
src/request.ts	0% <0%> (-96.16%)	❌
src/encoding.ts	0.67% <0%> (-95.98%)	❌
src/Observable.ts	3.84% <0%> (-94.88%)	❌
... and 30 more

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[dylans]

This one is now stale and needs a rebase @kitsonk

[kitsonk]

Replaced with a different PR