Added heartbeat() method for thread-safe heartbeating and internal
timers
Prototype thread-safe heartbeating... which won't work
Revert "Prototype thread-safe heartbeating... which won't work"

This reverts commit cb33c8ab42593b3fe12bc7b31d6bd5cdf9b3b934.
Revert "Added heartbeat() method for thread-safe heartbeating and internal timers"

This reverts commit 6301df51fd900ad0222d3333230a273e761d358f.
Initial attempt at some junction implementations