Changelog for timer-wheel-0.2.0

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to the Haskell Package Versioning Policy.

If the timer wheel reaper thread crashes, it will propagate the exception to the thread that spawned it
new may now throw InvalidTimerWheelConfig
The cancel action returned by register is now memoized, which fixes a bug involving trying to cancel a recurring timer twice. The second call used to spin forever and peg a CPU
Use Config type for creating a timer wheel
Change argument order around
Rename new to create
Make recurring timers more accurate