v2.0.0

Added

• Add default export (@zixia)
• Test that key and value of queued operation is not serialized (@vweevers)
• Test JSON encoding with stream (@vweevers)
• Add smoke test for levelup and leveldown without encoding-down (@vweevers)

Changed

• Update leveldown (@ralphtheninja)
• README: prefer 'underlying store' over database, backend etc (@vweevers)
• README: update badges (@ralphtheninja)
• README: unquote properties (@vweevers)
• README: clarify what excluding callback means (@vweevers)
• README: 'arbitrary data object' => 'of any type' (@vweevers)
• README: reduce 'supported platforms' section (@vweevers)
• README: rewrite intro and relationship with leveldown (@vweevers)
• README: cleanup (@vweevers)
• README: fix bad async code example (@ralphtheninja)
• Update deferred-leveldown (@ralphtheninja)

Removed

• Remove unstable typings and Typescript tests (@MeirionHughes)