Add es2015.promise lib

[agubler]

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:

• Added es2015.promise lib to tsconfig.json
• Fix unit tests
• use global from shim

[codecov]

Codecov Report

Merging #61 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master      #61   +/-   ##
=======================================
  Coverage   98.26%   98.26%           
=======================================
  Files          10       10           
  Lines         692      692           
  Branches      162      162           
=======================================
  Hits          680      680           
  Misses          4        4           
  Partials        8        8

Impacted Files	Coverage Δ
src/support/loadJsdom.ts	95.45% <100%> (ø)	⬆️

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