`isSessionStorage` prop doesn't work

[talor-hammond]

Hey there, isSessionStorage prop doesn't work (stuff is still being set in localStorage) -- have provided in my app like so:

 <Persist
    name={withdrawalFormName(investmentId)}
    isSessionStorage // ...here
  />

I noticed the PR for this prop had been merged, but the latest version was before that change..?

[anujsachan1990]

#24 there is already an open issue