v4.0.0

Breaking Changes

• 25f2f0648ba34c85283d2e5051232c83f996d056]liftReducer with autorehydrate (fix bug with hmr, non-hmr users should be unaffected)
• 5aef897 remove purgeAll(), purge all now default behavior of purge()
• 1786899 config.serialize is now a boolean option instead of a function. custom serialize function can still be achieved via transform.

New features

• 8a65894 umd & es builds! @marvinhagemeister
• 3e1b0d4 better localForage support! @willmcclellan
• 89ee329 more comprehensive localStorage checks! @IanVS
• 349a0b0 typescript defs! @morlay
• e9503e3 flowtype defs! @gnoff