Fix `getProviderById` test
Remove functions which are no longer needed
Remove reference to removed functions in README
Fix `params` not being omit-table when `requireId`
Allow `getDocumentById` and `getDocumentByIdentifier` to take params
Update mock JSON files to comply with API
Fix params being ignored in single-step call
Mock compliance to latest API changes
Remove duplicate code (:shame:)
Fix mock server checking the params even when asked not to do so
Style in tests
Update dependencies + adapt tests
Fix is-string helper
Merge pull request #52 from AnyFetch/wwrd

Update to comply with WWRD update of the API