var watcher
  -timeout!
  specify r/w/t flags!

croak should route through Carp!

documentation
  how to design new event types
  how to use $Event::API

Event::Watcher
  finish -priority => -nice migration (in a few weeks)
  finish leading dashes phase-out

optimization
  update io event-mask without invalidating cache
  use fancy profiler tricks to figure out how to improve performance!

time
  CORE::time?
  make relative to $^T
  alternate time encodings
  changing speed of time
  for year 2000 testing :-)

loop
  StarvePrio?

export_fail hook to autoload

accept "%f minutes" & "%f hours" for all time specifications?
