2017/04

Fixes #580 Gatwick (EGKK) SID redesignation (#588)

* Redesignated ODVIK, BIG and CLN RNAV departures, archived KKE02, added KKE04. Fixes #580.

* Amended changelog.

* Amended changelog.

* Amended changelog properly. Removed legacy SIDs.

* Removed legacy fixes.