Change history of «beat grid»

α	β	date	comment
		16 Jul'14 01:57
		16 Jul'14 02:38
		17 Jul'14 19:51	tempo restore
		18 Jul'14 03:33	fix
		18 Jul'14 03:37	fix
		18 Jul'14 03:45	one more fix )
		19 Jul'14 14:49
		19 Jul'14 15:33
		20 Jul'14 00:34	convert to control rate
		20 Jul'14 00:35
		14 Aug'14 01:27	minor fix
		14 Sep'14 15:39	allow .kr ugens in quantizer
		14 Sep'14 16:15	kind of rewrite
		14 Sep'14 16:41	minor fix
		21 Sep'14 11:58
		21 Sep'14 12:32
		28 Sep'14 09:46	latency fix
		28 Sep'14 09:47