switch gitter to discord for drone.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

.drone.yml

@@ -32,5 +32,10 @@ pipeline:
       event: [ push ]
       branch: [ master ]
 
-  gitter:
-    image: plugins/gitter
+  discord:
+    image: appleboy/drone-discord
+    webhook_id: ${WEBHOOK_ID}
+    webhook_token: ${WEBHOOK_TOKEN}
+    when:
+      event: [ push, tag, pull_request ]
+      status: [ failure ]

.drone.yml.sig

@@ -1 +1 @@
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+eyJhbGciOiJIUzI1NiJ9.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.BpcCmjE9fFVe2-qQZ18f_0ylFwOIk6oDDCwcdpHuXQ0

.editorconfig

@@ -15,13 +15,20 @@ indent_size = 8
 indent_style = tab
 indent_size = 4
 
-[*.{less,yml}]
+[*.{less}]
 indent_style = space
 indent_size = 4
 
+[*.{yml}]
+indent_style = space
+indent_size = 2
+
 [*.js]
 indent_style = space
 indent_size = 4
 
 [Makefile]
 indent_style = tab
+
+[*.md]
+trim_trailing_whitespace = false