Change history of 18th European Tcl/Tk Users Meeting 2020

Rev	Date	Modified by	Minor edit	Spam	WikiText	Revert to
4	2020-05-10 10:36:14	gs	no	no	4	4
3	2020-05-09 20:43:31	paul	no	no	3	3
2	2020-03-06 19:44:46	paul	no	no	2	2
1	2020-01-05 21:07:53	paul	no	no	1	1
0	2020-01-05 21:06:44	paul	no	no	0	0