fake-indexeddb 6.2.4

on Node.js NPM

Several small bug fixes to more correctly handle various edge cases and increase the number of passing tests from the Web Platform Tests (#147, #155, #157 by @dumbmatter; #156, #158, #159, #160 by @nolanlawson)

Improvements to testing infrastructure, allowing more Web Platform Tests to run (#148 by @dumbmatter; #150, #151, #152, #153, #154 by @nolanlawson)

Automated and updated the Web Platform Tests comparison table in the README (#161 by @nolanlawson)