Implemented map, flatMap and append + basic tests
added depr warning to compiler flags
Reverted Emit signature back to Emit(Seq[O])
Process1 implementation drafted, WIP on pipe
Taken Throwable argument out of Await, implemented Pipe
Introduced Step
added step combinator, drafted pipe via step
implemented kill, killby, unemit
Step a separate aglbra with Cont and Done. Refactored most of Process code to use step.
reimplemented process1.feed via step
Implemented pipe with step
redefined step
WIP-APPEND3
possible fix for infinite loop
Adapt the doc of sum to its implementation
Change sum to always emit one element and add prefixSums
Move Arbitrary and Equal instances to TestInstances
Move process1 tests to Process1Spec
Reorder tests alphabetically
More reordering and use === consistently