Update CHANGELOG.md

Author: DisposaBoy

CHANGELOG.md

@@ -1,18 +1,4 @@
+This branch of GoSublime is no longer supported.
 
-
-
-
-nsf/gocode is not enabled in go1.11.
-Try migrating to GoSublime's development branch https://margo.kuroku.io/b/migrate/?_r=gs
-
-
-
-**Donate:**
-
-Help shape the future of margo and GoSublime.
-See https://margo.kuroku.io/gosublime-future?_r=gs for more details.
-
-If you find GoSublime useful and would like to support me and future development of GoSublime,
-please donate via one of the available methods on https://margo.kuroku.io/donate?_r=gs
-
-
+Please switch to GoSublime's development branch.
+See https://margo.sh/b/migrate/ for instructions.