TODO list

1 handle 'connection did die' notification for distant objects in STEnvironment
2 fix class-info lookup for proxies in STEnvironment
3 implement NSRect object
4 write documentation for developers and users
5 Smalltalk: separate compiler and compilation context
6 rename modules to bundles, use just .bundle extension and create cote for
  STEnvironment to handle all bundles with specified protocol (including
  frameworks)
7 make GDL2 bundle automatically if GDL2 is present
8 prevent multiple loading of bundles in STEnvironment
9 Add Shell scripting environment