Modified Append to Option[Throwable]. Step is Now Append or Halt + added some helpers to make syntax more readable
Append type fixes
fixed step
Termination of ResourceSafetySpec and WyeSpec
fixed p1 specs
wye spec and termination fixed
Added `Cause` Algebra to Halt
Reintroduced EarlyCause \/ A to Await's receive method
process1 tests. pipe, process1.feed, kill, disconnect tested. Added CauseSpec
improved tee so it correctly propagates causes. introduced Process.feed