kontrol/kontrol.go: increase delay for heavy network based environments
kontrol/handlers: if we still get heartbeats, add them back
kontrol/handlers: handle another case
kontrol: simplify heartbeat more
kontrol: move onceevery to a separate package
onceevery: add tests
oncevery: fix race condition
onceevery: stop should not panic if it's get called multiple times
onceevery: fix typo
onceevery: fix another typo
onceevery: fix another typo
Merge pull request #84 from koding/heartbeat-improvements

Heartbeat improvements