Bump version number

Winni Neessen · Winni Neessen · commit 22d679cf53f5 · 2022-03-21T15:09:58.000+01:00
diff --git a/doc.go b/doc.go
@@ -2,4 +2,4 @@
 package mail
 
 // VERSION is used in the default user agent string
-const VERSION = "0.1.7"
+const VERSION = "0.1.8"
