* use .entry collection instead of installed.children
* adjust CSS counters
also:
* KeyboardEvent#code is checked first now - available since Chrome48 and FF32
* synthetic click event is cancelable, otherwise FF would open the editor in popup
numpad 0-9 same as 0-9
numpad + enables all listed
numpad - disables all listed
numpad * and ` (backtick) - toggles initially enabled styles;
doesn't apply to subsequently enabled styles while the popup is open
so you can restore the initial selection after testing stuff:
simply disable all, then toggle i.e. numpad -, numpad *
