add failing test case for #363
add comments
add test case
delay also if UpdateBarrier has waiters, to fix case when init value is being delayed
add yet another test case for the original problem fiddle of #363
Merge branch 'fix/363-simplify'
release 0.7.15
Bacon.sampledBy() implementation with few tests
add more tests for Bacon.sampledBy()
laziness in Bacon.sampledBy()
add Bacon.sampledBy() perf test