Merge #647: Announcements: add 0.17.1 to announcements RSS feed

668dd45 Announcements: add 0.17.1 to announcements RSS feed (David A. Harding)

Pull request description:

  Just adds 0.17.1 to the [new feed](https://bitcoincore.org/en/announcements.xml).  This should've been done as part of the final rebase of #610 but I forgot to git commit it.  🤦‍♂️

ACKs for commit 668dd4:

Tree-SHA512: 0f2b63d79c668f39e0490330f032b0d5ec25be3dd8f7fd2756e107cc9188143160802704dc83f24665be8e029c7077bd21d4f3d5f0b7b7aa8643bc4c3ad38511

Author: harding

_posts/en/posts/2018-12-25-release-0.17.1.md

@@ -10,6 +10,9 @@ share: true
 ## If this is a new post, reset this counter to 1.
 version: 1
 
+## Only true if release announcement or security annoucement.  English posts only
+announcement: 1
+
 excerpt: >
   Bitcoin Core 0.17.1, a maintenance release bringing bug fixes and minor
   improvements, is now available.