remove unreachable code
minor refactoring
minor refactoring
a little better .delay() perfomance
minor refactoring
.asKefirStream() now calls transformer with correct this context
minor simplify
minor refactoring in utils
fix bug in .asKefirStream()
minor
better public API for fromBinder, withHandler, and withInterval

Use emitter object instead of `send(type, value)` function in public API
fix perf tests
minor fix in docs
ability to return `callback array` as unsubscribe fn in fromBinder
fix custom stream demo
minor refactoring
fix perf test
docs
minor change in kefir-jquery
docs