updated ChangeLog with 1.11.19 entry

LMS 1.11.16

Merge pull request chilek#222 from maciejlew/oop

Constructors, properties and methods visibility in new PHP5 style for some LMS base classes

worthy to have something like this after two year of development, but…

… before massive changes which go soon later

- 1.11.13 Dira

- 1.11.12 Aris

- 1.11.11 Bray

- 1.11.10 Kri

- update copyrights year

- prepare 1.10.7

- 1.11.9 Moloc