WaniKani Shake Flash Yellow

override shake effect to instead flash yellow

这些是此脚本变更过代码的版本。显示所有版本。

v0.1.3 2014-09-01 add lesson page to include
v0.1.2 2014-08-22 now the arrow button background flashes yellow too. changed the easing, so it stays full yellow longer. added a few comments. callback 'this' should be right now, not that it probably mattered.
v0.1.1 2014-08-20 probably no functionality change. callback should have used original 'this'. minor cleanup.
v0.1 2014-08-19