-
-- property proxy in compount elements.
-- plugable schedulers.
-- implement events in plugins.
-- app must be able to catch events?
-- caps nego
-- propagation of errors in plugins.
-- deal with clocking issues
-- use real chaining where possible
-- factory aliases?
-- fix plugins :
-wtay : the proper fix is of course to fix the plugins and
-implement the cleanup in the state change function..