Merge pull request #1 from bairyn/master

Update example pages and fix bug causing all but the last Watir selectors in an element definition to be ignored
The general 1.9.3 should be fine.
Merge pull request #2 from bairyn/master

Parent elems, cached elems, block validators, handle_alert, etc.
Version bump.
Do some complex processing to catch stale element errors from selenium with caching.