Revision history for Sub-Throttler

0.2.0   Sun Dec 7 09:23:28 EET 2014
	INCOMPATIBLE API CHANGE:
	- rename Sub::Throttler::Rate::EV to Sub::Throttler::Periodic::EV
	- user func $target return HASHREF instead of one/two scalar/array
	- add sync acquire()
	- rename acquire() to try_acquire()
	- removed used()
	- removed :plugin export tag from Sub::Throttler

	API CHANGE:
	- period() can be modified
	- add load()
	- add save()
	- add Sub::Throttler::Rate::AnyEvent
	- add Sub::Throttler::algo

	Add support for throttling sync subs.
	Add support for CODEREF for non-anonymous functions.
	Add support for class methods and subclasses.
	Update tests.

0.1.1   Sat Jul 26 13:50:13 EEST 2014
	Fix tests to be less fragile.

0.1.0	Fri Jul 25 17:31:44 EEST 2014
	Initial public release.