## later 1.0.0
* Added private event loops: these are event loops that can be run
independently from the global event loop. These are useful when you
have code that schedules callbacks with `later()`, and you want to
call `run_now()` block and wait for those callbacks to execute
before continuing. Without private event loops, if you call
`run_now()` to wait until a particular callback has finished, you
might inadvertantly run other callbacks that were scheduled by other
code. With private event loops, you can create a private loop,
schedule a callback on it, then call `run_now()` on that loop until
it executes, all without interfering with the global
loop. ([#84](https://github.com/r-lib/later/pull/84))
