Update unexpected to 1.0.1.
Test that cachedFs.readFileSync throws if there's no memoized readFile result.
Take a single options object.

Added support for a 'context' option.

Update memoizeasync to 0.4.2 and memoizesync to 0.4.2.
Added 'skipUnimplemented' option.
Added CachedFs.patchInPlace.
Release 0.3.0.