Change history of Abstract base classes with TclOO

Rev	Date	Modified by	Minor edit	Spam	WikiText	Revert to
4	2016-05-27 12:00:10	HolgerJ	no	no	4	4
3	2016-05-27 11:58:15	HolgerJ	no	no	3	3
2	2016-05-27 11:57:55	HolgerJ	no	no	2	2
1	2016-05-27 11:56:46	HolgerJ	no	no	1	1
0	2016-05-27 11:54:27	HolgerJ	no	no	0	0