blog: add feed.en.xml & feed.fi.xml

Source:
https://github.com/snaptortoise/jekyll-rss-feeds/blob/master/feed.category.xml

blog/feed.en.xml

@@ -0,0 +1,24 @@
+---
+---
+<?xml version="1.0" encoding="UTF-8"?>
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+    <channel>
+        <title>{{ site.name | xml_escape }} - Miscellaneous</title>
+        <description>Posts categorized as 'miscellaneous'</description>
+        <link>{{ site.url }}</link>
+        <atom:link href="{{ site.url }}/blog/feed.en.xml" rel="self" type="application/rss+xml" />
+        {% for post in site.categories.english limit:10 %}
+            <item>
+                <title>{{ post.title | xml_escape }}</title>
+                {% if post.excerpt %}
+                    <description>{{ post.excerpt | xml_escape }}</description>
+                {% else %}
+                    <description>{{ post.content | xml_escape }}</description>
+                {% endif %}
+                <pubDate>{{ post.date | date: "%a, %d %b %Y %H:%M:%S %z" }}</pubDate>
+                <link>{{ site.url }}{{ post.url }}</link>
+                <guid isPermaLink="true">{{ site.url }}{{ post.url }}</guid>
+            </item>
+        {% endfor %}
+    </channel>
+</rss>

blog/feed.fi.xml

@@ -0,0 +1,24 @@
+---
+---
+<?xml version="1.0" encoding="UTF-8"?>
+<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
+    <channel>
+        <title>{{ site.name | xml_escape }} - Miscellaneous</title>
+        <description>Posts categorized as 'miscellaneous'</description>
+        <link>{{ site.url }}</link>
+        <atom:link href="{{ site.url }}/blog/feed.fi.xml" rel="self" type="application/rss+xml" />
+        {% for post in site.categories.finnish limit:10 %}
+            <item>
+                <title>{{ post.title | xml_escape }}</title>
+                {% if post.excerpt %}
+                    <description>{{ post.excerpt | xml_escape }}</description>
+                {% else %}
+                    <description>{{ post.content | xml_escape }}</description>
+                {% endif %}
+                <pubDate>{{ post.date | date: "%a, %d %b %Y %H:%M:%S %z" }}</pubDate>
+                <link>{{ site.url }}{{ post.url }}</link>
+                <guid isPermaLink="true">{{ site.url }}{{ post.url }}</guid>
+            </item>
+        {% endfor %}
+    </channel>
+</rss>