Implement PDF export with XHTML and paged CSS

History of Implement PDF export with XHTML and paged CSS — revisions from 1.1 to 8.2
From	To	Version	Editor	Date	Summary
From	To	8.2	Anca Luca	2022/02/25 09:25	Updated class property name
From	To	7.2	Anca Luca	2022/02/25 09:21	Updated class property name
From	To	6.1	Anca Luca	2022/02/25 09:17	Migrated property [difficulty] from class [GoogleSummerOfCode.ProjectClass]
From	To	5.1	Anca Luca	2018/01/23 11:51
From	To	4.1	Anca Luca	2018/01/23 11:50
From	To	3.1	Anca Luca	2018/01/23 11:49
From	To	2.1	Anca Luca	2018/01/23 11:49
From	To	1.1	Anca Luca	2018/01/23 11:49