Fix trailing spaces before </em>

Closes #2.

lib/convert.js

@@ -151,6 +151,7 @@ function getBodyXML(chapter, contentEl) {
   xml = xml.replace(/<p><em>([^>]+)<\/em>(!|\?|\.)<\/p>/g, "<p><em>$1$2</em></p>");
   xml = xml.replace(/(!|\?|\.)\s{2}<\/em><\/p>/g, "$1</em></p>");
   xml = xml.replace(/<em>([a-z]+)\?<\/em>/g, "<em>$1</em>?");
+  xml = xml.replace(/<em>([^>]+?)( +)<\/em>/g, "<em>$1</em>$2");
 
   // Fix recurring poor quotes and apostrophes
   xml = xml.replace(/<p>”/g, "<p>“");

lib/substitutions.json

@@ -21,7 +21,7 @@
       "after": "sue you,” he gasped"
     },
     {
-      "before": "<em>principles, </em>Glory",
+      "before": "<em>principles,</em> Glory",
       "after": "<em>principles</em>, Glory"
     }
   ],
@@ -93,8 +93,8 @@
   ],
   "https://parahumans.wordpress.com/2012/08/11/snare-13-5/": [
     {
-      "before": "<em>similar.  </em>",
-      "after": "<em>similar</em>.  "
+      "before": "<em>similar.</em>",
+      "after": "<em>similar</em>."
     }
   ],
   "https://parahumans.wordpress.com/2012/08/18/snare-13-7/": [
@@ -1020,8 +1020,8 @@
       "after": "Tattletale: waiting?"
     },
     {
-      "before": "<em>yes!  </em>",
-      "after": "<em>yes</em>!  "
+      "before": "<em>yes!</em>",
+      "after": "<em>yes</em>!"
     },
     {
       "before": "Please, If you",