feat: add state reconciler option

[ljbc1994]

What's the feature?

Add a stateReconciler option (plain function) so that the driver loaded state and current state can be merged in a custom way before being dispatched by the REMEMBER_REHYDRATED action. This means we provide flexibility for consumers if they want to deeply merge the state similar to redux-persist.

Example

import { merge } from 'lodash';

rememberEnhancer(rememberConfig.driver, rememberConfig.rememberedKeys, {
   stateReconciler: (currentState, loadedState) => merge({}, currentState, loadedState),
})

Checklist

• Added test to cover stateReconciler
• Updated doc in the README for the new option

Covers #7

[coveralls]

Pull Request Test Coverage Report for Build 13089924867

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 12824988712:	0.0%
Covered Lines:	207
Relevant Lines:	207

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💛 - Coveralls