add rss ttl

Signed-off-by: Christine Dodrill <me@christine.website>

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "xesite"
-version = "2.1.0"
+version = "2.2.0"
 authors = ["Christine Dodrill <me@christine.website>"]
 edition = "2018"
 build = "src/build.rs"

templates/blog_rss.rs.xml

@@ -9,6 +9,7 @@
         <link>https://christine.website/blog</link>
         <description>Tech, philosophy and more</description>
         <generator>@APP https://github.com/Xe/site</generator>
+        <ttl>1440</ttl>
         @for post in posts {
             <item>
                 <guid>https://christine.website/@post.link</guid>

templates/footer.rs.html

@@ -7,7 +7,7 @@
             <blockquote>Copyright 2020 Christine Dodrill. Any and all opinions listed here are my own and not representative of my employers; future, past and present.</blockquote>
             <!--<p>Like what you see? Donate on <a href="https://www.patreon.com/cadey">Patreon</a> like <a href="/patrons">these awesome people</a>!</p>-->
             <p>Looking for someone for your team? Take a look <a href="/signalboost">here</a>.</p>
-            <p>Served by @APP running @env!("out")/bin/xesite</a>, see <a href="https://github.com/Xe/site">source code here</a>.</p>
+            <p>Served by @env!("out")/bin/xesite</a>, see <a href="https://github.com/Xe/site">source code here</a>.</p>
         </footer>
 
         </div>