Fixed dot processing in directory names

kindlecomicconverter/comic2ebook.py

@@ -900,6 +900,7 @@ def createNewTome():
 def slugify(value, isdir):
     if isdir:
         value = slugifyExt(value, regex_pattern=r'[^-a-z0-9_\.]+')
+        value = value.rstrip('.')
     else:
         value = slugifyExt(value)
     value = sub(r'0*([0-9]{4,})', r'\1', sub(r'([0-9]+)', r'0000\1', value, count=2))