[Release] Update LegacyLauncher to 1.21

sotr2333 · sotr2333 · commit 51a6e7345fde · 2018-06-10T00:14:43.000+08:00
diff --git a/.gitignore b/.gitignore
@@ -54,4 +54,4 @@ out/
 # other stuff
 run/
 
-akarin-*.jar
+akarin-*.jar
