Updating for use with latest shim changes

[rorticus]

Description:

Upgrading to work with latest shim changes, dojo/shim#101 .

[codecov]

Codecov Report

Merging #43 into master will decrease coverage by 89.86%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #43       +/-   ##
==========================================
- Coverage   98.69%   8.82%   -89.87%     
==========================================
  Files          13      13               
  Lines         306     306               
  Branches       55      55               
==========================================
- Hits          302      27      -275     
- Misses          0     279      +279     
+ Partials        4       0        -4

Impacted Files	Coverage Δ
src/Pagination.ts	3.03% <0%> (-96.97%)	⬇️
src/Row.ts	4% <0%> (-96%)	⬇️
src/ColumnHeaderCell.ts	4.34% <0%> (-95.66%)	⬇️
src/pagination/PageLink.ts	4.76% <0%> (-95.24%)	⬇️
src/Grid.ts	2.56% <0%> (-94.88%)	⬇️
src/ColumnHeaders.ts	5.26% <0%> (-94.74%)	⬇️
src/GridRegistry.ts	3.22% <0%> (-93.55%)	⬇️
src/Body.ts	7.69% <0%> (-92.31%)	⬇️
src/Cell.ts	7.69% <0%> (-92.31%)	⬇️
src/Header.ts	9.09% <0%> (-90.91%)	⬇️
... and 3 more

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