added buffered channel test to cover (most of) state space
added buffered channel test to cover (most of) state space

HansDP/redux-saga,redux-saga/redux-saga,eiriklv/redux-saga,eiriklv/redux-saga,baldwmic/redux-saga,granmoe/redux-saga,ipluser/redux-saga,baldwmic/redux-saga,HansDP/redux-saga,yelouafi/redux-saga,ipluser/redux-saga,redux-saga/redux-saga,granmoe/redux-saga,yelouafi/redux-saga