[Glass] new tODE features available for early adopters (on dev branch)

[Dale Henrichs via Glass]

With PR #193[1], I've added some fairly significant new features to tODE.

The biggest change is that I've finally bitten the bullet and 
implemented a more familiar class browser, with buttons for switching 
between class and instance side methods with the more familiar method 
protocol and method selector windows.

The "class browser" is still made up of separate windows, but there is 
now a `Window>>history` menu item that allows you to go to previous 
instances of the window - the moral equivalent of a back button for each 
window.

Unsaved changes to code/text panes now cause a `promptForCancel` dialog 
to pop upgiving the option of saving your work, discarding the edits or 
canceling the window update ...

These changes require updates to both the client and server.

The upgrade steps are documented in the pull request[1], along with a 
little more detail on the changes.

If you have any questions, let me know.

Dale

[1] https://github.com/dalehenrich/tode/pull/193