BREAKING CHANGES: Some utility functions formerly used to retrieve default value of `CellStateStyle` and `CellStyle` properties,
mainly intended to only be used internally, have been removed.
Use the nullish coalescing operator (??) and the optional chaining (?.) instead.
Removed functions:
  - `utils.getValue`
  - `stringUtils.getColor`
  - `stringUtils.getNumber`
  - `stringUtils.getStringValue`

…nction

# Conflicts:
#	CHANGELOG.md
#	packages/core/src/util/Utils.ts

tbouffard deleted the fix/_wip_fix_defaults_and_remove_getValue_function branch

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