ignores keyup event if keydown event for same key was ignored
Merge pull request #145 from enyojs/CMB-1875-ryanjduffy

Fixes CMB-1875
JSDoc cleanup.
Enyo-DCO-1.1-Signed-Off-By: Jim Tang (jim.tang@lge.com)
Merge branch 'master' of https://github.com/enyojs/spotlight
JSDoc cleanup.
Enyo-DCO-1.1-Signed-Off-By: Jim Tang (jim.tang@lge.com)
add requestLeaveContainer parameter to allow opt out of nearest neighbor determination