Remove "globals" and replace them with the ability for IDs to be strings.

[doughsay]

It's just silly to only allow integer object IDs, its an arbitrary restriction. A better way of doing it could be this:

• when creating new objects, do or do not specify an id.
• the id can be a string or a number.
• if specified and available, that will be the id used.
• if not specified, use the auto-incrementing counter to get the next available numeric id.

Then we can get objects by id like this:

root = $ '#root'
someThing = $ '#123'

By using '#' like jQuery to specify ID lookups, we allow for future expansion of the query operator.

Would address #8.