Fix Wrong Year in CHANGELOG
Fix Wrong Year in CHANGELOG

Fix Wrong Year in CHANGELOG

It looks like 2017 was such a great year for Shaka Player
that we did not want it to end, so in our CHANGELOG we
decided to start 2017 all over again.

This change updated the two entries to say 2018 instead of
2017.

Closes #1263
vimond/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,TheModMaker/shaka-player,TheModMaker/shaka-player,vimond/shaka-player,TheModMaker/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,TheModMaker/shaka-player,shaka-project/shaka-player,vimond/shaka-player,tvoli/shaka-player