Update Grammaticus with 2020 changes

[steventamm]

New languages: Amhartic, Khmer, Samoan, Hawaiian, Kazakh, Haitian Creole
Support graal.js for javascript/offline testing
Support ICU for number formatting as an optional dependency
Reduce logging of label issues

[codecov-io]

Codecov Report

Merging #12 (1915e4c) into master (400342d) will increase coverage by 1.39%.
The diff coverage is 74.27%.

@@             Coverage Diff              @@
##             master      #12      +/-   ##
============================================
+ Coverage     66.85%   68.24%   +1.39%     
- Complexity     2302     2439     +137     
============================================
  Files           128      132       +4     
  Lines          9455     9835     +380     
  Branches       1629     1685      +56     
============================================
+ Hits           6321     6712     +391     
+ Misses         2375     2356      -19     
- Partials        759      767       +8     

Impacted Files	Coverage Δ	Complexity Δ
...-templates/com/force/i18n/grammar/VersionInfo.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
src/main/java/com/force/i18n/HumanLanguage.java	29.16% <0.00%> (ø)	0.00 <0.00> (ø)
...rc/main/java/com/force/i18n/LanguageConstants.java	0.00% <ø> (ø)	0.00 <0.00> (ø)
.../main/java/com/force/i18n/LanguagePluralRules.java	100.00% <ø> (ø)	2.00 <0.00> (ø)
...n/java/com/force/i18n/LanguageProviderFactory.java	59.25% <0.00%> (ø)	10.00 <0.00> (ø)
...om/force/i18n/commons/text/GenericTrieMatcher.java	82.56% <ø> (ø)	42.00 <0.00> (ø)
...e/i18n/commons/util/collection/AbstractIntMap.java	74.54% <ø> (ø)	14.00 <0.00> (ø)
.../i18n/commons/util/collection/ExpandableArray.java	71.53% <ø> (ø)	42.00 <0.00> (ø)
...force/i18n/commons/util/collection/IntHashMap.java	82.69% <ø> (ø)	36.00 <0.00> (ø)
...force/i18n/commons/util/collection/IntHashSet.java	44.44% <ø> (ø)	5.00 <0.00> (ø)
... and 62 more

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