more comments added

minor comment updates, version update

async queue updates, add'l tests, test updates

added events to async queue

addition of assert functions and loosened concurrency restrictions of workerpool

flowable naming updates to take/select

removed completion handlers

Flowable and Connectable (e.g. a flowable with a deferred input)

more tests added, disposable added to timeout primitives for improved cleanup

addition of flowable, tests