Update changelog
GEB-291 Catch NPE thrown by WebDriver.getCurrentUrl()  in Browser.go() - this is against the contract but happens for some rogue drivers
GEB-300 Add codenarc to the project, only import related rules enabled for now
Remove support for opening multiple BrowserStack tunnels as it turned out not to be necessary
GEB-286 Exception thrown when trying to set value on an invalid element (non form control)
GEB-300 Codenarc - white space
Merge branch 'GEB-286' of git://github.com/chris-prior/geb
Remove unnecessarily defensive code
Merge remote-tracking branch 'origin/master'